Since nothing is underlined, I am going to make an educated guess that the underlines clause is "who had worked with the business person". If that is the case, the correct answer would be D - adjective clause. It is a relative clause, to be more precise, because it starts with a relative pronoun "who", but that is a part of adjectival clauses, so that is the correct answer.
Answer:
If I wanted to leave the community I would ask to be released from it and if it was denied I would flee by the river.
Explanation:
"The Giver" presents a utopian society that, in an attempt to end any inequality in society, decides to monitor and make all the choices of society, including in relation to its professions and relationships. In chapter 6 of this book, we can see that it is possible to leave this community, if an individual wants to. In this chapter, we learn that there were cases of people who did not like the profession to which they were assigned and fled the community by crossing a river, but in this same chapter, we are informed that it is possible to lose a license to leave the community, if the individual does not want to do what you've been told.
C) Since there was a flicker fire in the cabin, I wonder if she [the glimmering girl] was actually there?
In this sentence, "which lasted two hours" is an adjective clause because it describes the school play by telling how long it lasted. Also, adjective clauses often start with words such as "who", "that", "which", or "when", along with others.
Answer:

an invented long word said to mean a lung disease caused by inhaling very fine ash and sand dust.
hope helpful <3