"B. By the light of the moon, I tripped over a <span>rock" would be the only sentence with a dangling modifier, since in this case it is unclear what exactly is being modified, since the moon light and the tripping incident could be two, separate events in time. </span>
The prefix and root in the word "reject" as they are used in sentence 2 give us an approximate definition. Which of the following definitions is accurate?