Choice C Sasha would not lend anyone her hat. This choice is correct The rest of the choices have double negatives, e.g. Felix <u>isn't never</u> going to finish his science project.
The answer is choice C. because the rest have answers where they use negative words more than once. You shouldn't say "None of the puppies wasn't playing." because you already denied it once, so you don't need to deny it once more with the word "wasn't."