Answer:
The word "choir" is a collective noun.
Step-by-step explanation:
A collective noun is a word that refers to a group of things, animals, or people. We often use collective nouns without even realizing it. Some of the most common are "team", "band", and "crowd". Other examples of collective nouns are: "flock", "pack", "committee", "panel", "herd", etc. The underlined word in the sentence, "choir", is also a collective noun. It is used to refer to a number of singers.