C - manners.
A boy like Roy, who has good manners, is welcome everywhere.
You can also replace the commas with dashes or brackets, they have the same effect but the different type of punctuation will make you a higher level.
A boy like Roy (who has good manners) is welcome everywhere.
A boy like Roy - who has good manners - is welcome everywhere.
Answer:
He was very successful writing novels.
Answer: I had to pay a one hundred dollar bill, to ride a hot air balloon.
Explanation: the hyphens aren't necessary.
The Answer is:
Not only..........but also.
