Questions: Q2.3. What is described by the movement of people between compartments in the SIR model? Change in location Change in health status Change in risk of infection

The answer is the second one: Change in health status.

Explanation for each option:

1. Change in location: This option is incorrect. The SIR model does not account for the geographical movement of individuals. It focuses on the transitions between different health states.

2. Change in health status: This option is correct. The SIR model describes the movement of individuals between three compartments: Susceptible (S), Infected (I), and Recovered (R). These movements represent changes in health status, such as becoming infected or recovering from the infection.

3. Change in risk of infection: This option is incorrect. While the risk of infection is an important aspect of the SIR model, the movement between compartments specifically represents changes in health status, not the risk itself.

Summary: The movement of people between compartments in the SIR model describes a change in health status.