The young ballerina danced until her feet ached.

The adverb clause until her feet ached modifies
Responses
A the verb, danced.the verb, danced .
B the pronoun, her.the pronoun, her .
C the noun, ballerina.the noun, ballerina .
D the adjective, young.

A the verb, danced.

The adverb clause "until her feet ached" provides information about the time frame during which the action of the verb "danced" took place, indicating how long the young ballerina danced. It modifies the verb by describing the circumstances under which the dancing occurred.