Step 1: Understand what a scalar quantity is. A scalar has only magnitude (size) and no direction.
Step 2: Identify the quantities given in the question: temperature, velocity, force, and acceleration.
Step 3: Determine the nature of each quantity: Temperature is a scalar (only magnitude), while velocity, force, and acceleration are vectors (they have both magnitude and direction).
Step 4: Conclude that temperature is the only scalar quantity among the options provided.