At least ten minutes had passed since the last locker door slammed. i had lurked long enough in the deserted shower stall, ruminating on my devious plan. i emerged to see the vacant room i’d anticipated. within minutes, i had deciphered the locker combination and opened it without witness. this was my chance to reclaim what was rightfully mine, and i felt my heartbeat escalate. which best describes the tone of the excerpt? confused secretive frustrated surprised