Answer:
Elion was determined to do everything she could in order to practice Chemistry.
Explanation:
The main idea of the excerpt centers on Elion's determination and willfulness in doing everything possible to ensure she practice Chemistry. Despite being denied the opportunity of taking a position as a graduate researcher, her determination to practice Chemistry is shown in the excerpt as Elion went ahead to take on series of jobs that enables her to practice Chemistry. In Elion's pursuit of practicing Chemistry, one of the sacrifice she had to make was having to forego receiving a doctorate degree as she could not devote herself to full-time studies.
The statement that best describes the main idea of the excerpt is: Elion was determined to do everything she could in order to practice Chemistry.