Question

the main, or central, idea of the passage is women have often failed to receive the credit they deserve for their scientific work. how does the detail in both chosen the main idea?
historically, men have dominated the field of science, and many women have not received professional credit or public recognition for their work. rosalind franklin, for example, was a chemist who did groundbreaking research into the structure of dna, a type of molecule in cells that helps control their growth, activity, and reproduction. franklin’s x - ray photograph of dna was shared, without her knowledge, with biologist james watson, franklin’s work helped watson and fellow researcher francis crick discover the structure of dna, but she received no credit when they won a nobel prize for their model of dna in 1962. another scientist denied credit for her work was jocelyn bell burnell. bell burnell was a postgraduate student in 1967 when she discovered the first radio pulsars—small, dense rotating stars that emit radio waves. however, the credit was given to her supervisor, antony hewish, who received a nobel prize in 1974.
it offers an explanation of why female scientists do not receive credit for their work.
it describes an incident when a female scientist did not receive credit for her work.

Explanation:

The bolded detail provides a specific, concrete example of a female scientist (Rosalind Franklin) whose critical work was used to achieve a major scientific milestone (DNA structure discovery) without her receiving credit. This real-world case directly illustrates and supports the main idea that women have been denied credit for their scientific contributions.

Answer:

The bolded detail uses a specific, well-documented case of Rosalind Franklin—whose X-ray DNA research was crucial to the discovery of DNA's structure but went uncredited when the Nobel Prize was awarded—to provide concrete evidence that supports the main idea that women have often failed to receive the credit they deserve for their scientific work.