Planet closest to Earth
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Mercury
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Venus
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Sun
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Mars
Mercury has the smallest average distance from Earth compared to other planets in our solar system, even though Venus is often called Earth's 'twin' and comes closer at certain points in their orbits. This is because Mercury's tight inner orbit keeps it relatively close to Earth on average. The Sun is a star, not a planet.
To answer this question, we need to understand the order of the planets in our solar system from closest to farthest from the Sun.
Option A) Mercury - This option is correct. Mercury is the closest planet to Earth. It is the innermost planet in our solar system and orbits the Sun at an average distance of about 57.9 million kilometers.
Option B) Venus - This option is incorrect. Venus is the second planet from the Sun, not the closest to Earth. While Venus is often referred to as Earth's "sister planet" due to its similar size and composition, it is not the closest to Earth.
Option C) Sun - This option is incorrect. The Sun is not a planet but a star. It is the central object in our solar system and provides the light and heat necessary for life on Earth.
Option D) Mars - This option is incorrect. Mars is the fourth planet from the Sun, not the closest to Earth. While Mars is often referred to as the "Red Planet" due to its reddish appearance, it is not the closest to Earth.
The correct answer is A) Mercury. This option is correct because Mercury is the planet closest to Earth.