Final answer:
The probability that a person selected at random has type A blood is approximately 25%.
Step-by-step explanation:
To find the probability that a person selected at random has type A blood, we need to divide the number of people with type A blood by the total number of people. In this case, the number of people with type A blood is not given, so we cannot calculate the exact probability. However, if we assume that the blood types are evenly distributed among the 600 people, then the probability would be:
Probability = Number of people with type A blood / Total number of people = 600 / 4 = 0.25 or 25%
Keep in mind that this assumption may not be accurate and the actual probability could be different.