Question

select the text from the paragraph that best helps you understand that assiduous means diligent. there may be more than one correct choice. through careful and thorough research, scientists howard florey and ernst boris chain were later able to use penicillin to develop the first antibiotics—drugs that are used to this day to fight serious infections like pneumonia. thus, although the initial discovery of penicillin occurred by accident, it was ultimately flemings determination to find a cure for bacterial infections and florey and chains assiduous labor that were responsible for the development of these life - saving drugs.

Explanation:

The word "assiduous" is related to the effort of Florey and Chain. The phrase "careful and thorough research" describes the nature of their work, which aligns with being diligent. Also, "determination" implies a diligent - like quality.

Answer:

"careful and thorough research", "determination"