I would say b, thats the best answer i would think of.
The correct answer is C.
Despite Bartleby being such a poor employee, Melville feels pity for him because he discovers that Bartleby is living in the office. The office is at Wall Street, a place that, according to Melville, is as desolate as a ghost town during nights and Sundays. He is affected by the loneliness of Bartleby's life and decides not to divulge his secret.
A pronoun and its antecedent must always agree in number; whether it is singular or plural. If the antecedent used is singular, then your pronoun should be singular too. If the antecedent is in plural form, the pronoun you use should also be in plural form. For example:
-The girls made themselves some sandwiches.
In this example, the antecedent used is "girls" which is in the plural form; therefore, the pronoun should agree to the antecedent and use the word "themselves".