Question

1. to make the robot go faster you could

a. use a physically larger version of the same battery
b. send more power to the arm motor
c. use chains instead of gears
d. send more power to the drive motors
e. use larger drive axles

Explanation:

To make a robot go faster, powering the drive motors (which are responsible for movement) more would be logical. A larger battery version (A) just gives more energy storage but not necessarily more power output for speed. Sending more power to the arm motor (B) affects arm - related functions, not movement. Using chains instead of gears (C) is a design choice that doesn't directly relate to speed in a straightforward power - speed relationship. Larger drive axles (E) might change torque - speed characteristics but not as directly as increasing power to the drive motors.

Answer:

D. send more power to the drive motors