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.
What a way to ask a question, no answers nor traces of what you're trying to ask.
I am not sure which poem you are referring to here, but one poetical technique is called enjambment. This occurs when a line continues to the next line without a pause. Even if there is a stanza break in between, the lines are meant to be read continuously. For example, consider these lines from a poem by William Wordsworth called Beauteous Evening:
"The holy time is quiet as a Nun
Breathless with adoration; the broad sun
Is sinking down in its tranquility"
Here, Wordsworth is not intending that you pause after you read "Nun" or "sun." He wants you to read these lines as a continuous sentence or thought. Hope this helps.
Answer:
Nobody likes John at school. (active voice)
John is liked by nobody at school. (passive voice)