Freedom Riders= Civil rights activists, rode s bus to the southern segregated parts of the US (1961) to complain about the US court cases ( Morgan v. Virginia and Boynton v. Virginia) deciding that segregated public buses were unconstitutional, and the first Freedom Ride left Washington, D.C. on May 4, 1961,[5] and was scheduled to arrive in New Orleans on May 17.[6]
I would say A. It would be difficult to find workers for jobs that people didn't desire. Like how minorities pick produce nowadays and you don't hear of white people picking produce.
The most likely reason is to prevent the president from abusing its power.
Hope this helps:)
C. To present military interventions. Clinton was president when the Iran and Libya situations were going on, and his response was to increase the military presence.