Pls will give brainliest

read the following paragraph. how does sentence 4 develop the main idea of the paragraph?

1. gertrude belle elion was born on jan. 23, 1918, in new york city.

2. she graduated from hunter college in new york city with a degree in biochemistry in 1937.

3. unable to obtain a graduate research position because she was a woman, she took a series of jobs, including lab assistant, chemistry and physics teacher in new york city high schools, and research chemist.

4. during this time she also took classes at new york university, where she earned a master's degree in 1941.

5. because she could not devote herself to full-time studies, elion never received a doctorate.

Read the passage from sugar changed the world. sugar is a taste we all want, a taste we all crave. people throughout the planet everywhere have been willing to do anything, anything at all, to get that touch of sweetness. we even know exactly how thrilling it was to taste sugar for the first time. when the lewis and clark expedition met up with the shoshone, who had little previous contact with old world products, sacagawea gave a tiny piece of sugar to a chief. he loved it, saying it was "the best thing he had ever tasted." sugar created a hunger, a need, which swept from one corner of the world to another, bringing the most terrible misery and destruction, but then, too, the most inspiring ideas of liberty. sugar changed the world. we begin that story with a man who could never know enough. how does the conclusion of the prologue support the authors’ purpose? select two options. it introduces the topic that will be addressed next. it provides information about the authors. it states why the topic is relevant to readers. it cites sources the authors used in the text. it explains how the authors came to study the subject.