Final answer:
The correct verb pair to complete the sentence "Cuando se comida chatarra, se __ de peso" is option C: come, aumenta.
Step-by-step explanation:
The correct verb pair to complete the sentence "Cuando se comida chatarra, se __ de peso" is option C: come, aumenta.
In this sentence, the subject pronoun "se" is used to indicate a reflexive action, meaning that the subject is both the doer and the receiver of the action. Therefore, we need to use the third person singular form of the verb to match the subject. "Come" is the correct form of the verb for the singular subject "se."
The verb "aumenta" is also correctly conjugated to agree with the singular subject "se." It means "increases."
Learn more about Spanish Verbs