Find the part of the given sentence that has an error in it. If there is no error, choose ‘No error’.
Our hands have been crucial tools for finding and eat food, and helping us navigate the world.

Correct option is D

Option (d) contains an error.
The phrase “for finding and eat food” is incorrect. The correct phrase should be “for finding and eating food”.
Grammatical rule used:
When using parallel structures, verbs in a list should follow the same form. Since “finding” is a gerund, “eating” must also be a gerund. (Both should end in -ing.)
Example: She is good at singing and dancing.
Information Booster: Mixing verb forms like “finding and eat” is a common error. Always match verb forms in lists.