Answer:
c) She considered Mrs. Long to be both a guide and a mentor.
C. preposition...........
It is false that the connotations of a word have little effect on its literal meaning. Connotation are your personal feelings that a certain word evokes when you think about it/read it/write it.
For example, the word home means a house, but its connotation is usually positive - you connect it with love, warmth, etc.
C. To support the main idea.