Question

a sociologist wants to determine how people who shop at a particular grocery store decide what to buy. match each research design to the potential problem it poses.
poorly operationalized variables
ethically questionable study
experimenter effects
based on observation, the researcher will classify shoppers as \hunters\ or \browsers.\
a hidden camera films shoppers as they react to a potentially offensive store display.
a researcher dressed as a store employee asks people what products theyd like to see stocked.

Explanation:

Answer:

Based on observation, the researcher will classify shoppers as "hunters" or "browsers." - poorly operationalized variables
A hidden camera films shoppers as they react to a potentially offensive store display. - ethically questionable study
A researcher dressed as a store employee asks people what products they'd like to see stocked. - experimenter effects