In order to understand the correct answer, let`s analyze each option and the given velocity versus time graph.

Option 1: According to option 1, accelerated motion is represented by line segment CD, and decelerated motion is represented by line segment BC. However, this is not correct because decelerated motion should be represented by a line segment in which the velocity decreases with time, which is not the case for line segment BC in the given graph.

Option 2: According to option 2, accelerated motion is represented by line segment BC, and decelerated motion is represented by line segment AB. This is not correct because line segment BC in the given graph does not represent accelerated motion.

Option 3: According to option 3, accelerated motion is represented by line segment CD, and decelerated motion is represented by line segment AB. This is the correct answer. Line segment CD shows accelerated motion because the velocity increases with time. Line segment AB represents decelerated motion because the velocity decreases with time.

Option 4: According to option 4, accelerated motion is represented by line segment AB, and decelerated motion is represented by line segment CD. This is not correct because line segment AB in the given graph does not represent accelerated motion