Answer:
The answer is whom.
Explanation:
The director chose whom for the role.
An infinitive is the infinitive form of the verb that is being formed with "to" plus the base form of the verb. It can be used either as a noun, adjective or as an adverb. ... This infinitive functions in the sentence as an adverb, modifying the verb "create".
Please give more context in order for me to answer this question.