The option through which the subject and verb agree are "finish/take"
A verb is one of the parts of speech in English language and it can be defined as any word that describes an action, occurrence, or state of existence. Thus, a verb is an action or doing word.
Some examples of a verb are dance, sing, walk, play, run, sit, clap, cheer, read, etc.
A subject can be defined as the person, thing, idea or place that performs an action in a sentence.
On a related note, a subject-verb agreement is a situation in which there exist a relationship between the predicate and subject of a sentence.
This ultimately implies that, a subject and a verb must agree either in terms of number or tense usage.
In this context, the most appropriate verb to use in completing the sentence is finish (present tense) because its subject (crowd) is singular (each of the committee members). Also, the latter part of the sentence should be completed using the verb take (present tense).
In conclusion, the subject and verb in this scenario agrees when finish and take are used respectively.