As Bookworm83 pointed out already, C nor D couldn't possibly correct, also due to the reason that he was able to come up with the 14 point plan. However, the real answer to your question would be A - he was very shy.
The shyness of Woodrow Wilson has been readily documented in variou sources and is also the reason why it's th ecorrect answer. Overcoming something like shyness was not an easy thing to do for him.
The disclosure of this document contributed to <span>the entry of the United States into World War I, since Germany had been sinking US ships that were holding supplies. </span>
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.
