Of 1232 people who came into a blood bank to give blood, 397 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure. Round to three decimal places as needed. A. 0.241 B. 0.29 C. 0.373 D. 0.322

Step 1 ：Given that 1232 people came into a blood bank to give blood, out of which 397 people had high blood pressure.

Step 2 ：We are asked to estimate the probability that the next person who comes in to give blood will have high blood pressure.

Step 3 ：The probability of an event is calculated by dividing the number of successful outcomes by the total number of outcomes.

Step 4 ：In this case, the successful outcome is a person having high blood pressure, and the total number of outcomes is the total number of people who came into the blood bank.

Step 5 ：Therefore, the probability can be calculated by dividing the number of people with high blood pressure (397) by the total number of people (1232).

Step 6 ：Using the formula for probability, we get \(\frac{397}{1232} = 0.3222402597402597\).

Step 7 ：Rounding to three decimal places, we get 0.322.

Step 8 ：Final Answer: The estimated probability that the next person who comes in to give blood will have high blood pressure is \(\boxed{0.322}\).