Answer:
He is investigating the rumored haunting at Lorraine Castle. The other characters in the story are the three elderly caretakers, who the narrator initially finds disturbing.
Explanation:
"The Red Room" is that he gradually becomes unhinged by fear. During his night in the red room he feels incredibly uneasy, as if there's a ghostly presence lurking around.
The only example of internal conflict among these is Kevin wants to take Katie to a dance, but his best friend Jason has already told Lauren and Ashley that he and Kevin would take them.
The other examples are all external conflicts.
Tipped his hat politely
because a complete predicate includes the verb and all the words that tell what the subject is or what it does.
I think it might be d but I am not sure I need more background knowledge