Question

question 10
pressure is the amount of force acting on a specific amount of 1

Explanation:

The question is about the definition of pressure in physics. Pressure is defined as the force applied per unit area. So the missing term should be "area" as pressure ($P$) is calculated as $P = \frac{F}{A}$, where $F$ is force and $A$ is the area over which the force is distributed.

Answer:

area