Answer: The words that reveal the pace of the story are: hustled, fidgeted, and hasty.
Explanation: The reason is because, from the options, these words stand out as words which denote pace, and also, they are words that denote impatience and nervousness. The words also describe the actions she took as she went to her locker, waited while she opened it and hurried to class, as we can see from the story, Jenna is obviously in a hurry and impatient.
The rest of the options though (backpack, familiar, numbers, science test) are mere nouns which cannot be used to denote any kind of pace whatsoever and therefore, have no significance in the determination of the pace of the story.