What do select commities deal with?

The name 'select" committee is loose terminology and can mean more than one thing. It may refer to a committee to study or "do" only one thing specific thing. e.g.: A committee that was established to study the color red, would not trouble itself by studying the colors blue, yellow, or green - JUST red. OR - it may refer to the makeup of the persons assigned to the committee, as being sonehow special or "select" or extraordinarily endowed to take on a specific task.