Answer: C) one who announces or signals that others are coming.
Step-by-step explanation: The connotation of a word is the meaning given by the context or even by the readers, based on their emotions or personal experiences, it is the antonym of denotation, which is the literal meaning of a word, the one that we can find in a dictionary. In the given excerpt the connotation of the word "harbingers" is one who announces or signals that others ar coming.