Which body, department, or agency would be most likely to hold a public hearing?

A) Department of Justice

B) Central Intelligence Agency

C) A Congressional standing committee

D) United States appellate court judges

I think its D but I'm not sure, thoughts?

C) A Congressional standing committee

Explanation:

These committees are in the House of Rep and the senate saddle with the responsibilities of bringing up or designing proposals with different policies in the interest their constituencies which are brought before the house for final ratification.

However, during all these processes, they will set up a public hearing to gather the information and interest of the main people the policies are meant for.