what is one method for gathering information about customers?\na insight.\nb assessing needs.\nc using…

Brief Explanations:

Surveys are a common and direct way to gather customer - related information like preferences, satisfaction levels etc. Insights are the end - result of analyzing information, not a gathering method. Assessing needs is a process that may use gathered information. Heuristics are mental shortcuts and not a primary customer information - gathering method.

Answer:

D. Surveys