Final Answer:
1. Dr. Harkup brings a “Thump” (a sound) — specifically, the sound of his foot hitting the floor.
2. Whiz is a robot.
3. Evidence: “‘Thump!’” (the sound), “his foot hit the floor,” and “he was so quiet he could move himself around unnoticed.” These show he’s mechanical and silent except for that one sound.
4. The robot (Whiz) accidentally makes a “Thump” sound when moving, and Dr. Harkup realizes Whiz is not as quiet as he thought — he can be heard when he moves.
Parent Tip: Review the logic above to help your child master the concept of making inferences worksheet 4th grade.