What did Derrick make and how did it pull the screw from the channel in the engine block?
a) Derrick made a bar magnet, and it created a gravitational field that attracted the screw.
b) Derrick made a hydraulic pump, and it exerted pressure to push the screw out.
c) Derrick made a specialized wrench, and it provided the necessary torque to remove the screw.
d) Derrick made a magnetic tool, and it attracted the screw due to its magnetic field.