The faster a starter motor rotates ____________________.

The most accurate completion of the statement is that the faster a starter motor rotates, the greater the amount of torque produced. This is important in automotive systems because the starter motor needs to generate sufficient torque to overcome the engine's internal resistance and initiate the combustion process.

When a starter motor spins faster, it typically results in an increase in both speed and torque to start the engine effectively. The relationship between speed and torque is significant in various applications, including starting an engine. A higher rotational speed allows for better efficiency in the motor’s operation, leading to the desired result of turning over the engine more effectively.

Looking at the other options, while it's true that drawing more current usually correlates with increased torque, the current draw actually can vary based on the design and efficiency of the starter motor under load. Therefore, current draw and speed don't have a simple direct relationship. Additionally, the concept of the counter electromotive force (CEMF) becoming less with increased speed is not entirely accurate; CEMF tends to increase with motor speed, which can affect performance dynamics but does not negate the torque aspect. Thus, the clearest and most relevant answer focuses on the torque production relative to the rotational speed of the motor.