what is the purpose of comittees in congress

(a) foster relationships between states
(b) overriding presidential vetos
(c) aide presidential appointments
(d) study specific subjects

The purpose of committees in Congress is to study specific subjects in detail and efficiently handle the legislative workload. They allow members of Congress to specialize in certain policy areas, gather information, and draft legislation related to their area of expertise. Committees also enable thorough examination and debate of bills before they are presented to the full chamber for a vote. Therefore, the correct option is (d) study specific subjects.