Historical Explorations and Expeditions

The primary objective of Vasco da Gama's historic voyage was to establish a direct maritime trade route from Europe to India.

Vasco da Gama was a famous Portuguese explorer known for being the first European to reach India by sea. He was not a space traveler or a performer.

King Manuel I of Portugal commissioned Vasco da Gama to find a sea route to India to bypass the expensive land trade routes controlled by other powers.

Edmund Hillary and Tenzing Norgay were the first confirmed climbers to reach Mt. Everest's summit on May 29, 1953. Note: The date range 1648-1660 in the question is incorrect and unrelated to the Everest ascent. The other name pairs are fictitious or incorrect combinations.

Gerardus Mercator is famous for the Mercator projection, a cylindrical map projection that became the standard for nautical navigation due to its ability to represent lines of constant course as straight lines.

Christopher Columbus is historically credited with the European discovery of the Americas in 1492 while searching for a westward route to Asia.

Christopher Columbus was searching for a westward sea route to India and believed he had reached the East Indies when he landed in the Americas.

• Darwinism is an evolutionary theory proposed by Charles Robert Darwin, an English Naturalist. He believed that evolution is a gradual, rather than a sudden biological event. His theory was based on several facts, He sailed round in Beagle, his ship observations and inferences. They are 1) overproduction, 2) constancy in population, 3) struggle for existence, 4) natural selection.
  
• The prodigality of production or overproduction: Every organism tends to increase its population in large proportions. For example, Paramecium divides by binary fission at the rate of three to four times a day. At this rate, the volume of all the paramecia equals to 10,000 times that of the earth at the end of the 9000th generation in the absence of any check.
• Constancy in population: However, such an abnormal increase is not noticed in the population of any species in nature as the offspring die in large number before reaching the reproductive age. It is true that the food and the other sources do not increase in the same proportion as that of the population.
• Struggle for existence: As the food sources are limited, severe competition exists among the members of a population. Darwin called it a struggle for existence.
• Natural selection: The organisms with less reproductive success are not represented in future generations, however, fit they may be in the struggle for existence. This is called the Natural selection. Herbert Spencer called this phenomenon Survival of the fittest.
• Darwinism failed to explain the mechanism by which variations occur. Thus Darwin faced the criticism "DARWINISM EXPLAINS THE SURVIVAL OF THE FITTEST BUT NOT THE ARRIVAL OF THE FITTEST".

Charles Darwin visited Galapagos islands, the chain of 22 islands located in the Pacific Ocean on the west coast of South America, during his voyage on HMS Beagle. Since Galapagos islands were once connected with South America mainland, many birds of the island resembled those of mainland. This observation laid the foundation of his concept of adaptive radiation and his theory of evolution. Thus, the correct answer is option B.

The Galapagos Islands were prominently featured in Charles Darwin's landmark book on evolution, The Origin of  Species. On his visit to the Galapagos Islands, Charles Darwin discovered several species of finches that varied from island to island, which helped him to develop his theory of natural selection.

• Darwin reached the Galapagos islands on HMS Beage while travelling which is of historic importance.
  
• During his visit to the islands, Darwin noted that the unique creatures were similar from island to island, but perfectly adapted to their environments which led him to ponder the origin of the islands' inhabitants.
  
• So, Darwin's visit to the Galapagos Islands had a resounding impact on the formation of his Theory of Natural Selection.
  

Christopher Columbus's voyage in 1492 marked the European discovery of the Americas, although the continent was already inhabited by indigenous peoples.

Ferdinand Magellan led the first expedition to circumnavigate the globe, setting sail in 1519 and completing the journey in 1522.

Vasco da Gama's voyage to India in 1498 opened up a direct sea route from Europe to Asia, revolutionizing trade and exploration.