Question

1. factors that affect acceleration include

the power of the engine.
gear ratios.
the weight the engine is pulling
all of the above.

Explanation:

Engine power directly impacts the force available for acceleration. Gear ratios determine how engine power is translated to wheel torque, affecting acceleration rate. The weight being pulled (mass) is inversely related to acceleration per Newton's second law ($F=ma$), so heavier loads reduce acceleration. All listed elements affect acceleration.

Answer:

all of the above.