Mark lives in a densely populated American city and he buys groceries from the nearby corner store. The corner store mostly sells food that is canned or frozen and doesn't have a lot of variety. What can we infer about Mark?

It can be inferred that Mark lives alone and could be financially unstable.

Explanation:

There can be several factors regarding such practice of Mark. Since he buys from a nearby store that has limited variety of products and canned food it can be assumed that Mark lives alone and there are not much residents to demand for change in purchasing of food items. Mark might also be financially unstable to travel to some other store variety products are available and are expensive for him to buy.

Moreover, it's also a possibility that Mark prefers canned food over fresh food.