One way that Frederick Douglass used to make his writing objective was by avoiding sentimentality. Option C is correct.
Objective language is employed in those writings which are intended to convey an accurate and fair message with reliable information. Therefore, in order to convey objectiveness, a writer will avoid bias, exxageration, and personal opinion.
Frederick Douglass was an American social reformer, abolitionist, orator, writer, and statesman.
