Topic: Right Form of Verb,

Best Answer Explained in Below-:

The sentence "I heard the baby ---------- for his food" requires a form of the verb "cry" that fits grammatically with the verb "heard." In English, "heard" functions as a past tense verb, which typically requires a subsequent verb to be in its base form or its participle form when used in this context.

Looking at the options:

A) "cry" - This is the base form of the verb and does not correctly align with how "heard" is used.

B) "was crying" - This is a past continuous form and would need to be restructured for proper usage, as it suggests ongoing action rather than a momentary action.

C) "crying" - This gerund form effectively indicates the action that was occurring at the moment it was heard, making it the most fitting choice for the sentence. The phrase can be interpreted as "I heard the baby making the sound," which precisely captures the image of the baby vocalizing.

D) "cried" - This is also a past tense form, which does not match with the need for a gerund or participle in this context.

Therefore, the correct answer is C) "crying," as it appropriately describes the action the speaker perceived.