Physics

The correct answer is C. "m/s" is a unit of speed.

Option A, "sec," is a unit of time (seconds) and not a unit of speed.

Option B, "mi," is a unit of distance (miles) and not a unit of speed. However, "mi/h" (miles per hour) is a common unit of speed in some countries that use the imperial system.

Option D, "min," is a unit of time (minutes) and not a unit of speed.

In physics, the SI (International System of Units) unit for...