The Manager of an IGA Is Interested in Asking Consumers

The manager of an IGA is interested in asking consumers what they think about the store's new layout and expanded produce selection.If the manager would like to obtain a high response rate and have the study conducted as quickly as possible, which data collection method would you recommend?

A) Mail survey
B) Direct observation of consumers in the store
C) Telephone survey
D) Focus group interview
E) Shopping-centre intercept interview