Which of the following representations corresponds to residential use zones?

Residential use zones are typically designated to separate residential properties from commercial, industrial, or mixed-use developments. The designation of "A," "R1," and "R2" is commonly used to identify areas primarily intended for residential housing.

Zones labeled "A" often refer to agricultural land, which can sometimes contain residential elements, but primarily focuses on farming and related activities. Meanwhile, "R1" signifies single-family residential use, and "R2" designates areas for two-family or duplex residences. This categorization effectively illustrates the intention for both areas to accommodate homes with varying densities, making option B the correct answer.

In contrast, designations such as "M1" and "M2" typically correspond to manufacturing or industrial operations, while "C" is generally associated with commercial uses. Therefore, the other choices do not align with the concept of residential zoning, reinforcing that B is indeed the appropriate selection for residential use zones.