The correct answer is A. refined.
Boorish means lacking good manners or social graces. It is the opposite of refined. A refined person is well-mannered and has good taste. They are also usually intelligent and cultured.
A funny person is someone who makes people laugh. They may be good at telling jokes or making witty remarks.
An eccentric person is someone who is unusual or unconventional in their behavior
or appearance. They may have unusual interests or hobbies.A friendly person is someone who is kind and approachable. They are usually good at making friends and are always willing to help others.
In the sentence “His boorish ways amused everyone,” the word “amused” means “to cause someone to feel pleasure or enjoyment.” In this case, the speaker is saying that everyone found the man’s lack of good manners and social graces to be funny. This suggests that the man was not refined, but rather boorish.