The following items are in a cooler: one turkey sandwich, one bottle of soda, and one bottle of water. The sandwiches are the same size and same shape. The bottles are the same size and same shape. The tree diagram below shows all the possible combinations of randomly selecting one sandwich and one bottle. What is the probability of selecting a ham sandwich and a bottle of water?
A. 3/4
B. 2/3
C. 1/4
D. 1/3
Since the tree diagram shows all the possible combinations, we can count the number of outcomes that result in a ham sandwich and a bottle of water. There is only one outcome that satisfies this condition: selecting the ham sandwich and then selecting the bottle of water.
Therefore, the probability of selecting a ham sandwich and a bottle of water is 1 out of the total number of outcomes, which is 4.
So the probability is 1/4.
The correct answer is C. 1/4.