In this excerpt, the author recognizes the perceived drawbacks of giving advice through the use of

"though i employ so much of my time in writing to you, i confess i have often my doubts whether it is to any purpose. i know how unwelcome advice generally is; i know that those who want it most like it and follow it least; and i know, too, that the advice of parents, more particularly, is ascribed to the moroseness, the imperiousness, or the garrulity of old age."

a. simile
b. personification
c. metaphor
d. juxtaposition
e. anaphora