Final answer:
The correct verb form is 'Ayudaré'.
Step-by-step explanation:
The correct verb form to complete the conversation is Ayudaré. This is the first person singular future tense of the verb 'ayudar' which means 'to help' in Spanish. In the conversation, Rafael is asking Isaac what he will do at the museum tomorrow, and Isaac responds that he will help the visitors who will come. The verb form 'ayudaré' matches the subject 'yo' (I) in the conversation.
Learn more about Spanish verb conjugation