D. How does the lack of sleep hurt someone's health?
In the sentence "They say we will not be able to afford to own houses in a few years." there's a <u>pronoun reference</u> error. It is unclear who the pronouns<em> they </em>or <em>we </em>are referring to.
Pronouns are used to replace nouns, and it is considered to be a pronoun reference error when the reader is unable to deduce from the text the noun being replaced by the pronoun.
It was the <span> National Aeronautics and Space Administration (NASA)</span>
The Title hope that helps :)
Answer:
the medium in which it is told
Explanation: