Which unit is associated with magnitude but not direction?

• A. Time
• B. Displacement
• C. Velocity
• D. Force

Answer: (A)

Time is a scalar quantity, meaning it has magnitude but no direction. Its unit is seconds, which measures how long something lasts without any orientation. The other options involve direction: displacement has a direction from start to end, velocity combines speed with a direction of motion, and force has both magnitude and the direction in which it acts. So time, measured in seconds, is the unit that corresponds to magnitude alone.