Which of the following is a common design constraint?

Regulatory requirements are essential design constraints that must be adhered to during the product design process. These constraints are often established by government agencies and industry standards, ensuring that products meet safety, health, and environmental guidelines. For instance, a product designed for consumer use must comply with regulations that dictate materials, labeling, and functionality. Adhering to these requirements is crucial, as failure to do so can lead to legal penalties, recalls, or harm to users, thus impacting the product's success in the market.

While consumer preferences, global trends, and advertising budgets may influence the design process, they do not constitute mandatory constraints in the same way that regulatory requirements do. These factors may vary widely and can shift over time, but regulatory requirements remain constant legal obligations that designers must navigate, making them a fundamental aspect of product design.