Pa help po pls :(

1. A screw is a special kind of what simple machine?
A. Lever
B. Wedge
C. Inclined plane
D. Wheel and Axle

2. What should people living near a volcano do to lessen the destructive effects of an earthquake?
A. be aware of any unusual volcanic activity.
B. Stock some food and water.
C. evacuate if necessary.
D. All of these