According to the passage, what is the function of the linking se

According to the passage, what is the function of the linking sentence in an illustration essay?
A、To repeat the main idea presented in the topic sentence.
B、To provide additional examples to support the thesis statement.
C、To connect the topic sentence and the example(s) presented in the paragraph.
D、To introduce a new topic unrelated to the preceding paragraph.
【正确答案】：C