In uniform linear motion, the speed and velocity are 

In order to clarify the nature of velocity and speed in homogeneous linear motion. We'll use the idea that, regardless of the duration of the period, a moving body travels the same distance throughout time.
The distance and displacement are equal at every specific time period in uniform linear motion. As a result, the velocity and speed at any specific time interval are both identical. Therefore, we may state that the speed and velocity are constant in uniform linear motion.
As a result, option A is the appropriate response. It states that uniform linear motion will result in constant speed and velocity.

moves at a steady pace in a straight path.
No matter how brief the intervals, they must be identical in length and result in the same displacement.
similar to the body's real speed or velocity.
The motion in which there is no acceleration is known as uniform linear motion. Uniform linear motion is not accelerated since the magnitude and direction of the velocity are both constant. Either no external force is present, or there is no net force acting on the system.
The pathways under the graphs are straight lines with uniform motion (vertical, horizontal or slanting).

Hence, the correct answer is option A.