Multiple choice Which of the following statements is/are correct? Scientists world over are working on two major projects, such as “Deep Ocean Drilling Project” and “Integrated Ocean Drilling Project”. The deepest drill at Kola, in Arctic Ocean has so far reached a depth of 12 km. It is difficult to ascertain the depth of the source of magma from the volcanic eruptions. Both 1 and 3 Both 1, 2 and 3 Reveal answer Fill a bubble to check yourself E Correct answer Explanation This is the correct answer, as all these statements are correct.