two classes of elementary school students are going on a field trip, and they will be provided with a snack. Each student selects one snack option. The table summarizes the snack preference of each student in the class.
a. What is the probability that a student selected at random prefers peach slices as a snack?
b. What is the probability that a student selected at random prefers an apple or carrot sticks as a snack?
c. What is the probability that a student in class A selected at random prefers an apple as a snack?
d. What is the probability that a student selected at random is in class B and prefers carrot sticks as a snack?