Which would most improve the coherence of an essay?
a) adding vivid sensory details and active verbs
b) revising the essay to past tense to link ideas
c) using active voice and first person point of view
d) considering the essay's organization and repeating keywords

D) considering the essay's organization and repeating keywords

Explanation:

In writing, coherence is the logical connection between sentences and paragraphs of a particular text. There are devices we can use to connect ideas within a sentence and paragraph. If an essay is coherent, the reader can follow it easily. It it, therefore, important to mind the organization of an essay. Preparing an outline will help to make sense of the main ideas presented. In essay outline, we brainstorm the main ideas and organize them.  It is also useful to repeat key words and phrases in the paper, as it will be easier for a reader to understand the main idea and follow the text.

Those are all examples of edible fish. so your answer is numbers 1 and 3.