Answer:
B. Hidden spot or area
Explanation:
the "hidden spot" includes includes secrets, past experiences, feelings, etc...
It's what is known to ourselves but kept hidden from, and therefore unknown, to others The reason for this might be because the information is personal to you and you are hesitant to disclose it.
Since Xavier is hiding his real personality from his friends out of fear that they won't like his true self, it's something personal to him
so this is hidden
