Answer:
The correct answer option is B. explain and support the thesis.
Step-by-step explanation:
Each paragraph of an essay should explain and support the thesis.
A paragraph is formed when a group of sentences are linked and connected with each other in a way that they deliver or communicate a single idea to the reader.
While a thesis statement is the sentence which states the main idea of a paragraph or any piece of writing.
In an essay, since each paragraph deals with one idea so it should explain and support the thesis statement.