Answer: Eighth Amendment
Excessive bail shall not be required, nor excessive fines imposed, nor cruel and unusual punishments inflicted.
Explanation:
(C) For the longest time Europeans and other outsiders could not travel into central Africa due to the various disease they were not immune or accustomed to, as it meant almost certain death for anyone not native to the area.
Well think about it, Barnabas already parted from Paul. Paul didn't want to go with Mark. So that takes Paul completely off the list. So it was Barnabas and Mark who went.