Final answer:
When selecting a microcontroller for a project involving a servo motor as an actuator, it's essential to ensure the microcontroller has a Pulse Width Modulation (PWM) pin to control the servo.
Step-by-step explanation:
If a student intends to include a servo motor as an actuator in a project, the feature that should be included when selecting a microcontroller is a Pulse Width Modulation (PWM) pin. Servo motors are controlled by sending them a PWM signal, where the width of the pulse determines the position of the servo arm. Therefore, it is essential for the microcontroller to be able to generate PWM signals to accurately control the movement of the servo motor. Digital to Analog converters (DACs), Analog to Digital converters (ADCs), GPIO pins, and I2C pins are important for various other applications but are not specifically required for controlling a standard servo motor with PWM.