Question

which statement is true about joint committees?
they are permanent, dedicated to working on a specific kind of bill.
they are primarily investigative, performing research and impact studies.
they contain members from both political parties.
they wield a large amount of power over a wide jurisdiction.

Explanation:

Permanent committees handle specific bill types; investigative/study-focused are select committees; joint committees are defined by having members from both legislative chambers (and thus both major political parties in bicameral systems like the U.S.) and do not have broad, high-power jurisdiction.

Answer:

They contain members from both political parties.