The dependent variable is that she bites her nails. Being nervous is an independent variable due to that it doesn't depend on anything said. However, in order for her to bite her nails, she has to be nervous as stated.
The past form of catch is: Choice C, caught
When the author attempts to gain the audience’s personal trust, the author is using ethos.
Sunny~ ☺
The answer is b for this question
Answer: i would go with diverse