Allison wants to write a paper about the effects of plastic straws on the environment. Which question is open-ended and will help her research this topic? How many plastic straws are used each year? When did people first start using plastic straws? Which companies have stopped using plastic straws? How do plastic straws impact wildlife?
"How do plastic straws impact wildlife?" is the open-ended question.
Explanation:
The other three options can be answered with few definitive answers, but asking how they impact wildlife allows the writer to answer with various responses.
