The process of selecting a subset of a population for a survey is known as

The process of selecting a subset of a population for a survey is called sampling.

It chooses a manageable group meant to represent the larger population.

Survey research is the whole method of data collection, not the act of choosing the subset.

Representation is the desired quality of a good sample, not the selection process itself.

Triangulation combines multiple methods or sources rather than drawing a subset.

Sampling may be probability or non-probability depending on how members are chosen.