4. which of the following are reasons as to why there are agencies outside the department of defense? . a.. exploration of using all resources for military gain. c.. security within borders. b.. espionage. d.. troop assignment. 5. the selective service system or requires that certain citizens serve in the military.. 6. the draft was suspended largely because. a.. american public opinion opposed it.. b.. the president vetoed it.. c.. the supreme court declared it unconstitutional.. d.. world war ii ended.