For those fluent in Spanish, can you help with number 26 &27? (Matching)

Samuel delgado: ¿cómo le va? profesora gonzález: _

When could you attach the direct object pronoun to an infinitive verb? a: when an infinitive verb follows a conjugated verb. b: when an infinitive verb ends in a question. c: when a stem-changing verb ends in a question. d: when a stem-changing verb follows a conjugated verb.

Iate fruit. yo comistes fruta. yo comí fruta. yo comimos fruta. yo comieron fruta.