I believe its D...but that's just me, I hope this helps :)
Answer:
Of course, parents will always want to know what their children are up to no matter how old they get. However, sending a spy on them is not always the wisest option, especially when it can do damage to your child.
Elimination is always the best. Pick out the worst possible answers, so it'll give you less choices to pick from. Or you could always pick c. I wouldn't advise that. Good luck on your test. :)