Answer:
A. They contain members from both major political parties
Step-by-step explanation:
Joint committees are made up of members of both the Senate and the House of Representative that deal with matters of joint interest, and that usually have narrow jurisdictions. Although most of joint committees are permanent panels (such as the Economic, Library, Printing, and Taxation committees), sometimes temporary joint committees are created to address specific issues such as to resolve differences between similar versions of a bill created by the House and the Senate (conference committee).