What factor is NOT commonly considered when selecting materials for a product?

When selecting materials for a product, market trends are not typically a primary factor compared to considerations that directly affect the performance and usability of the product. Durability is crucial as it determines how well the material can withstand wear and tear, which influences the product’s lifespan and reliability. Cost is also a major consideration since it affects profitability and the overall budget for production. Environmental impact is increasingly relevant as consumers and manufacturers are becoming more aware of sustainability issues; therefore, materials that are environmentally friendly or have a lower carbon footprint are preferred. In contrast, while market trends can influence design aesthetics or brand perception, they are not essential in the functional and performance-oriented decision-making regarding material selection.