Forces and elasticity scenario: arrows show the size and direction of forces on one object. Which answer best addresses Hooke's law and spring constant and the objective to state that extension is directly proportional to force up to the limit of proportionality?

The correct answer is: In the free-body diagram scenario, apply force to state that extension is directly proportional to force up to the limit of proportionality while keeping elastic versus plastic deformation separate.

The correct option is In the free-body diagram scenario, apply force to state that extension is directly proportional to force up to the limit of proportionality while keeping elastic versus plastic deformation separate.. It is correct because the scenario says arrows show the size and direction of forces on one object, which must be interpreted through Hooke's law and spring constant. This directly supports the learning objective to state that extension is directly proportional to force up to the limit of proportionality. Use values 4, 11, and 16 only if the question asks for a calculation. The answer earns credit by naming the relevant force or motion quantity, using units when needed, and avoiding the boundary error elastic versus plastic deformation.