C because it makes more sense
I think the topic sentence is sentence 10.
Appositive phrases are used to further describe the nouns before them. They act like adjectives, although they aren't necessarily always adjectives. In most cases, they are separated from the rest of the sentence using commas on both sides. So yes, you are right - the appositive phrase in this sentence is either tulip or daffodil.
C is the correct answer mate
The prefix in the word 'impartial', meaning 'unbiased', is im-. Without that prefix, partial means biased. Im- is a prefix that gives a word its opposite meaning.