Answer:
The answer would be A.
Explanation:
The sentence has a verb and subject but does not have a an independent clause.
Part A: it’s D, The country has the highest unemployment rate in five years.
C.
Most civilizations that thrived for long periods of times expanded into surrounding territories.
The subordinate clause in this sentence is 'Since I stopped vacuuming', and it is used as an adverb in this sentence, the adverb of time.