Autonomous motion depends on sensors that provide information about the robot's environment.

• A. True
• B. Not necessarily
• C. Never.
• D. Only when the robot is powered.

Answer: (A)

Perception drives autonomous motion: a robot needs information about its surroundings to decide where to go and how to get there safely. Sensors provide data on obstacles, walls, terrain, and the robot’s own state (position, orientation, velocity). This information lets planners generate a collision-free path and controllers execute trajectories while adapting to changes in the environment. Without sensing, a robot would be blind to what’s around it and couldn’t reliably navigate, even if it had a preplanned route, because real-world scenes are rarely static or perfectly known. Power supplies energy, not the need for environmental information, so autonomy hinges on those sensors. So the statement is true.