The three different aspect of the manor life.
1. In fields and farmlands, they very self-sufficient and staying outside manor is very dangerous and unsafe.
2. The follow Church's teaching because they believed that everything in life is determined by God.
3. They set roles in the society where everyone has a role.
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.
