I would write them all out but im lazy. change the noun after the word by and make that the subject of the sentence followed by the verb and the rest of the sentence :)
Answrs: Part a) "Facts from a documentary.." This is talking about the benefits of artificial organs instead of donated ones.
Part b) "There are several ..." Because it is a sentence that is likely to precede facts. The others are opinions about how something 'SHOULD' be, and aren't presenting facts or claiming something.The first one 3ven says "I think..." which is clearly an opinion.
He might have chosen to use a rhyme scheme because couples are supposed to work together, compliment another, and be in sync, similar to a rhyme scheme
