Which of the following is a disadvantage of casting?

The identification of environmental problems as a disadvantage of casting is valid because casting processes can have significant environmental impacts. For example, the melting of metals often requires high energy consumption, contributing to carbon emissions if fossil fuels are utilized. Additionally, the disposal of waste materials and emissions from the molds and melting operations can lead to environmental pollution.

Casting processes can produce hazardous fumes and require careful management of materials to avoid contamination. This places a burden on regulations regarding health and safety as well as environmental sustainability.

In contrast, options indicating advantages—such as the suitability for mass production, net shape processes, and the applicability to various metals—highlight the strengths of casting. These aspects emphasize the efficiency, versatility, and cost-effectiveness of casting, which are not disadvantages.