B. It has all compound sentences.
The preposition is the word 'along'.
What is the question you are asking sir.
Answer:
B. After the band performed, a number of people said that their singing was at a professional level.
Explanation:
Since based on the context we don't know how many singers there were in the band, we can't choose a singular pronoun here. The singular pronouns mentioned in the options are <em>her, its, </em>and <em>his or her, </em>meaning that all of those options are incorrect. Because there may be more than one singer in the band, we must use the plural possessive pronoun <em>their </em>to refer to all of the singers in this band.