Question

We eat so that we ...................... survive.

• A. must
• B. used to
• C. could
• D. may

Hint:

Use "could" to express possibility or ability in purpose clauses.

Answer 1

The Correct Option is C

Step 1: Understand the purpose clause.
In this sentence, we are expressing a purpose (survival). The word "could" expresses the possibility of surviving due to the action of eating. The other options don't fit the intended meaning.
Step 2: Analyze each option.
- (A) must: Incorrect. "Must" expresses necessity, but the sentence here is expressing a possible result, not a requirement.
- (B) used to: Incorrect. "Used to" refers to past habits, which doesn't fit the context of survival.
- (C) could: Correct. "Could" expresses possibility or ability, which fits with the idea that eating enables the possibility of survival.
- (D) may: Incorrect. "May" expresses permission or a weaker possibility than "could."
Step 3: Conclusion.
The correct sentence is "We eat so that we could survive."