a) <em>support</em> is the correct option.
A paragraph has a topic sentence and this is followed by information that supports it. This can have examples, definitions, comparisons or facts.
These options are wrong:
b)support and a concluding sentence. This organization suits the last paragraph of an argumentative essay because there is a conclusion.
c)concluding sentence. This cannot follow a topic sentence because the paragraph would be incomplete. There should be some support between the topic and the concluding sentences.
d)a thesis statement, topic sentence, support, and a concluding sentence. These are the steps of a whole essay , not of a paragraph.
