Since the Earth's crust is much thicker under the continents, equipment would have to be capable of drilling through 100,000 feet of rock to investigate the mantle ______.
A beneath them
B beneath their
C beneath its
D beneath they
Solution
Correct Answer: Option A
-preposition-এর পরে pronoun-এর object form use হবে।
-এখানে beneath হলো preposition।
-এজন্য beneath-এর পর them ব্যবহৃত হবে।