Answer:
The correct answer is option A. Allusion
Explanation:
An allusion is used in rhetoric to refer to something indirectly, that is, by referring to it.
In this case the title "An Idle Fellow" refers to inactivity, who has been the faithful companion during the author's life.
He even describes himself as a person who does not like to do anything, and his "idle fellow" is said inactivity.
A biography written by a person who did not personally know the subject
TeX is crying about his horse
