Final answer:
The third major point in a paragraph provides additional information or evidence to support the topic sentence.
Step-by-step explanation:
Introduce and explain the third major point that supports your topic sentence.
The third major point in a paragraph provides additional information or evidence to support the topic sentence. This can be done through the use of facts, statistics, examples, or other types of evidence. The point should be clearly explained and connected to the topic of the paragraph.