Use the excerpt from “Bias Won't Stop Young Scientist Studying Animals” to answer the question. How does the author use the last paragraph to develop and refine the central idea?

A) The author’s central idea is that people with disabilities are underrepresented in scientific breakthroughs and technological development at the professional level. The last paragraph gives reasons the climate crisis and a growing global population make this problem worse.
B) The author’s central idea is that people with disabilities are underrepresented in scientific breakthroughs and technological development at the professional level. The last paragraph gives reasons they are likely to be better represented in the future.
C) The author’s central idea is that more than 25 percent of adults in the United States identify as having a disability. The last paragraph gives reasons that people who have a disability are not represented in science.
D) The author’s central idea is that the lack of representation of people with disabilities leaves science worse off. The last paragraph gives reasons that people with disabilities are needed in science—because they have tremendous innovative capacities. The author’s central idea is that the lack of representation of people with disabilities leaves science worse off. The last paragraph gives reasons that people with disabilities are needed in science—because they have tremendous innovative capacities.