Question

check your understanding
what can the optical sensor detect and report?
the distance in millimeters between the robot and the nearest object
the proximity and color of an object, and the brightness of light surrounding the sensor
if the sensor is being pressed or not pressed at the moment the sensor is queried
the number and general sizes of nearby objects on the field

Explanation:

Optical sensors can detect properties related to light and objects using light - based principles. They can measure proximity (distance - related information using light reflection), color (by analyzing light wavelengths), and light brightness.

Answer:

The proximity and color of an object, and the brightness of light surrounding the sensor