Answer: Choice C, the population of the study is everyone in the community.
Step-by-step explanation:
A) This is false because the population is the entire community. The population is the set of people the study is focused on, or who the researchers care about, so they can answer the question. In this case the question is "is the community interested in a yoga class". The sample would be the set of people who were emailed and responded.
B) False. Refer to choice A above.
C) True. Again, refer to choice A.
D) False. The sample consists of people who respond either way (saying yes they want to take it, or no they don't want to take it). It's not solely consisted of one side.