Explanation:

- Preindustrial cities often struggled with food supply problems. They rarely had *adequate food supplies* due to transportation issues and poor storage. So, option 1 does not describe preindustrial cities.

- Cities were known for crowded conditions. Many people lived in close quarters, which sometimes led to poor sanitation and disease spread.

- With dense populations and poor sanitation, mortality rates were increased in cities. Outbreaks of diseases were common and life expectancy was lower.

- Migration to and from preindustrial cities was usually *easy*, as city walls and boundaries weren’t strong obstacles, and people often moved searching for work or safety. Thus, difficult migration wasn’t typical.

The correct answer is: Option 1, adequate food supplies.