The correct answer is C. recognition of.
In order to thoroughly appreciate something, first of all you need to have a particular knowledge about the subject. Then you need to observe it thoughtfully and come to your own conclusion. In the end, you need to recognize its value, regardless of whether you like it or not.
C. concerned.
I think Benvolio is concerned because when hes speaking to Montague he says he had seen how depressed Romeo was but he didn't want to go after him because he wanted to be alone but he reassured Montague that he would go and check on romeo if he was OK....<span />