Final answer:
The categorical variable in the options listed is A. the brand of jeans you usually wear, which places items into non-numerical categories.
Step-by-step explanation:
The categorical variable among the options given is A. the brand of jeans you usually wear. Categorical variables place items into categories and do not have inherent numerical value. In contrast, options B, C, and D (the price you paid for your last pair of jeans, the distance to the store where you bought your last pair of jeans, and the number of pairs of jeans you own) are examples of numerical variables which can either be discrete or continuous and have numerical values that can be used for mathematical calculations.