Answer:
The sentence that consistently reflects the tone of the paragraph is C) Just then, a loud crack of thunder startled Mark so badly that he screamed.
Step-by-step explanation:
We are being asked to choose the sentence that consistently reflects the tone of the paragraph. Throughout the paragraph, the author describes how fierce the storm is and how scary it looks and sounds to Mark, the character. Mark is frightened to the point of gripping his sheets intensely and begging for the storm to pass. If he fears the storm so much, it does not make sense for Mark to simply laugh at his ridiculousness, doze off to sleep, or simply decide to play video games. To keep the consistency in what has been presented, it would be only logical for him to end up screaming in fear after hearing a thunder. Thus, the best option is letter C.