The correct answer is A. intelligent.
A robot is considered to be intelligent if it can alter its own trajectory in response to external conditions. This means that the robot is able to sense its environment and make decisions about how to move based on that information. This is a more advanced level of intelligence than simply being able to follow a set of instructions.
Option B, mobile, is not the correct answer because it does not address the robot’s ability to alter its own trajectory. A mobile robot is simply one that can move from one place to another.
Option C, open loop, is also not the correct answer because it refers to a type of control system that does not use feedback.
An open loop control system is not able to adapt to changes in its environment, so it would not be able to alter its own trajectory in response to external conditions.Option D, non-servo, is also not the correct answer because it refers to a type of motor that does not use feedback. A non-servo motor is not able to control its speed or position very precisely, so it would not be able to alter its own trajectory in response to external conditions.