Which of these sentences contains an adverbial clause

Why does henry david thoreau think imprisonment is ineffective?

Cite evidence what moment might be called the climax, or highest point of tension, in act v? what is clear to the audience and to macbeth at this point?

How will charlie most likely change after his experience at the diner in part 2 of "flowers for algernon"? he should be kind to each person who crosses his path. he will be more sympathetic to those who are similar to the way he once was. he will attempt to the dishwasher receive the surgery he was given. he will react the same way each time he sees someone being treated unfairly.