Answer:
it's b because it's literally b
The Taj Mahal is a tomb. An Indian emperor called Shah Jahan built it more than 300 years ago for his favorite wife when she died. It's designs and decorations strongly reflect Persian influences.
His opinion is most clear in the first sentence, and is supported later in his opinion. He believes that Virginia could be a very nice, beautiful and wealthy place with more work. He insists that Virginia hasn't reached its full potential yet.