A congressional committee focus on specific duties, rather than the general duties that Congress handles. The members of it can develop specialized knowledge about the matters of their jurisdiction.
As experts on the field in which they are part, the committee members could do options A, B, and D because they understand better than anybody in the Congress about the matter. But sign it into law is a power that the legislative branch does not have. It is an executive power which the President holds.
From Texas, more citizens joined the armed forces than from any other U.S. state. Texas contributed with products such as beef, petroleum products, medical supplies, weapons and equipment which were used by troops oversees.
