Question

a musician wanted to see what people who bought his last album thought about the songs. which choice best represents a sample? a selection of people who didnt want to buy the album. a selection of 3,294 people who bought the album. 250 girls who bought the album. every person who bought the album.

Explanation:

A sample is a subset of the population of interest. The population here is people who bought the album. Selecting people who didn't want to buy the album is not relevant. Selecting only girls is a biased sample if we want to know all buyers' opinions. Selecting every person is the population, not a sample. A selection of 3,294 people who bought the album is a proper sample as it's a subset of the relevant population.

Answer:

A selection of 3,294 people who bought the album.