Answer: metaphor
This is a comparison between two things that doesn’t use “like” or “as”, so it is a metaphor.
The Sender : Diana
The Receiver : Nurhayati
Nurhayati's problem : She/he isn't sure whether her/his friends like him/her.
1.) If you have a problem with your friend, get a new one.
2.) You will create success if you, be kind.
3.) If you want everyone to like you, why not be positive?
4.) You should treat your friends with respect and warmth if you want everyone to like you.
5.) If they abuse you, why not get new friends?
Answer:
Reason for writing. 1st choice
For centuries, people from Europe came to north America to settle and explore.
I would choose either c or d, but c seems more logical to me, given the author is stating the visitor's purpose through figurative language, I would assume they would have a more metaphorical purpose to their cause.