PLEASE HELP!! A community group would like to raise funds to pay for improvements to the community swimming pool. The group’s leaders are considering a number of methods to assess community interest in raising funds. Which of the following uses convenience sampling?

A. The group sends a survey through the mail to all community residents.
B. The group places a survey on a webpage where residents can register their support.
C. The group stands outside a shopping center and asks residents who enter if they support raising funds.
D. The group selects a random sample of homes in the community, and residents in those homes are interviewed.