Question

______ is a research method use for scientific investigation to collect a sample of a population?
trophic level
poach
survey
case study

Explanation:

A survey is a common research method used to collect data from a sample of a population in scientific investigations. A trophic level refers to the position an organism occupies in a food - chain. Poaching is illegal hunting. A case study focuses on an in - depth analysis of a single case or a small number of cases, not typically for sampling a population.

Answer:

C. Survey