Julia has been a nurse all her life. She has spent her life caring for . . . . . . . . sick. A. a B. an C. the D. no article

The correct answer is D. no article.

The word “sick” is a non-count noun, which means it does not have a plural form and does not take an article. Other examples of non-count nouns are water, air, and love.

In the sentence “Julia has been a nurse all her life. She has spent her life caring for sick,” the word “sick” is used as a collective noun to refer to all people who are sick. In this case, it would be incorrect to use an article, such as