What should be considered unacceptable regarding proximity to commercial properties?

The correct choice underscores the importance of assessing the nature of nearby properties, particularly regarding their intended use. Non-incidental business on or near a residential property can introduce factors such as noise, increased traffic, and potential disturbances that significantly impact the residential living experience. This consideration is vital in maintaining the residential character of an area and ensuring that the quality of life for residents remains unaffected by commercial activities.

The other options represent criteria that do not adequately reflect the primary concerns related to residential peace and comfort. The distance of 100 feet may not sufficiently encapsulate the potential disruptions that commercial activities can pose, and simply having only residential properties or recreational properties within specific distances does not inherently guarantee a desirable living environment. The focus here should be on the activities themselves and their ramifications, rather than solely on geographic proximity or the nature of adjacent properties without considering their impact.