The true statement is: No, because she did not use a simple random sample.
From the question, we have the following highlights:
The 20 intramural tennis players cannot represent all tenth-grade girls.
This is so because the selection is biased, and as such it cannot be used to make inference about the overall population
Hence, the true statement is (b)
Read more about random sampling at:
https://brainly.com/question/25725757