B.
<span>Unemployment is high in many fields, but there are jobs available in telecommunications.
A comma is used when it is placed after the end of one independent clause and the beginning of another which follows one such clause. The two independent clauses must be joined with words known as co-ordinating conjunctions. Examples of such words are, but, and,or so etc.
In this sentence but is used, </span>preceded by a comma so it is the right one.
The adjective is "ice" because it is describing what kind of blocks they were.
I believe the speaker in this work of art comes to realize that D) His father has led an extremely admirable life.
It just explains and tells the importance of the idea
