Correct Answer:
B. to make unnecessary
Obviate means to remove a need or difficulty.
- Correct answer - to make unnecessary: it has the same meaning as Obviate.
- indispensable: absolutely necessary - wrong, it does not mean the same as Obviate.
- slow to understand: taking a long time to grasp things - wrong, it does not mean the same as Obviate.
- to point out: to draw attention to - wrong, it does not mean the same as Obviate.