Asses sment:According to 8, how does age affect the function of T cells? A. T cells are more productive as we age, which can shorten the length of recovery. B. T cells are more productive as we age, which can make flu symptoms more severe. C. T cells are less productive as we age, which can lengthen the time of hospitalization. D. T cells are less productive as we age, which can lead to increased health risks and death.

## Step 1<br />The problem is asking us to determine how age affects the function of T cells. T cells are a type of white blood cell that plays a crucial role in our immune system. They are responsible for cell-mediated immunity, which is a part of the adaptive immune system.<br /><br />## Step 2<br />As we age, the function of T cells tends to decrease. This is due to the fact that the thymus, where T cells mature, starts to shrink as we age. This shrinkage leads to a decrease in the production of new T cells.<br /><br />## Step 3<br />The decrease in T cell function can lead to a weakened immune system, making us more susceptible to infections and diseases. This is because T cells are less effective at combating pathogens as we age.<br /><br />## Step 4<br />Given this information, we can conclude that the correct answer is the one that states that T cells are less productive as we age, which can lead to increased health risks and death.