Geometry

Question Analysis
This question involves using a tree diagram to calculate the probability of a specific combination of a snack and a drink choice.
The main focus is on identifying the correct sequence of branches in the tree diagram and multiplying the corresponding probabilities to find the probability of choosing a cookie and milk.

Key Concept Explanation
In a tree diagram representing multiple - step choices, the probability of a particular combination of choices is determined by multiplying the probabilities along the branches that lead to that combination.
Each choice at a step is represented by a branch, and the probability on the branch indicates the likelihood of making that choice.

Step - by - Step Solution
First, identify the probability of choosing a snack.
The probability of choosing a snack is 2/3.
Then, given that a snack is chosen, identify the probability of choosing a cookie. The probability of choosing a cookie when a snack is chosen is 1/2.
Next, given ...