Geography

Question

2.

rescarchers are unable to drill into the

Earth's core, its chemical composition remains a mystery.

Step 1: Continue

Step 2:

A) While

B) Because

C) Despite

D) Although

Contrast

Cause-and-Effc

Answer

D) Although

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The correct answer is D) Although. "Although" is used to introduce a contrast between two ideas. In this case, the first part...