What is an acceptable way to show rather than to tell?
using a thesaurus
avoiding the use of anecdotes
using transitions throughout the essay
including dialogue

An acceptable way to show rather than to tell is:

Using a thesaurus

Explanation:

The avoidance of anecdotes is not a good way to show instead of telling because anecdotes are perfect to provide the reader the chance to observe the situation instead of the problem instead of just showing the learning.

Using transitions throughout the essay is a way to connect not to show, so it is not pertinent here.

Including dialogue could be good to represent a story without narrating it, and the author could also learn the lesson without telling it, but it would require the ability to understand the pragmatic and abstract message of the story.

However, Using a thesaurus to provide learning instead of telling it. It would be the best way to provide clarity to a doubt.

answer; (b); the abolitionist movement;