Edge cities have developed as suburban counterparts to .
1. the traditional downtown areas of large central cities
2. the traditional factory zones of large central cities
3. the traditional transitional zones of large central cities
4. the tradition bedroom communities of large central cities

Answer is 1. The traditional downtown areas of large central cities.

Refer below.

Explanation:

Edge cities have developed as suburban counterparts to the traditional downtown areas of large central cities.

The best answer is option "1"

The traditional downtown areas of large central cities.

Explanation:

Edge city is a term used to describe for a concentration of business, shopping, and entertainment outside a traditional downtown or central business district, in what had previously been a suburban residential or rural area.

A suburban is a mixed-use of residential area, mostly as a part of a city or urban area or as a separate residential community within commuting distance of a city. Suburbs increases rapidly in number around cities that have an abundance of adjacent flat land.