Question

1. which best describes a sample?

millions of people from the same ethnic group
a small group that represents an entire population
the interviewer in a research project
the researcher who creates survey questions

Explanation:

In research and statistics, a sample is defined as a subset of a larger population that is selected to represent and allow inferences about the whole population. The other options do not fit this definition: a large ethnic group is a population itself, and interviewers/researchers are part of the research team, not a sample.

Answer:

a small group that represents an entire population