What constitutes an unacceptable hazard near a manufactured home?

The correct answer identifies visible hazards such as gas stations and salvage yards as unacceptable near a manufactured home due to the potential risks they pose to residents. Gas stations can be dangerous because they involve flammable materials and the risk of spills or explosions, which could compromise the safety and integrity of the manufactured home. Similarly, salvage yards often handle hazardous materials and vehicles that could pose health risks or an environmental threat, attracting pests and creating unsightly, potentially dangerous conditions.

In contrast, the other options consist of businesses and facilities that generally do not present the same level of risk. Schools and parks are designed for community use and are focused on safety and recreation; residential homes and offices typically provide stable environments, and grocery stores and restaurants are essential services where hazards are usually managed appropriately. These types of establishments contribute to community livability rather than representing the kind of hazards that could directly affect the safety and well-being of those living in manufactured homes.