What information is required to be included in product labels?

The correct choice highlights the essential information necessary for consumer safety and informed decision-making when purchasing a product. Product labels are legally required to include ingredients, safety warnings, and usage instructions. This ensures that consumers are aware of what the product contains, any potential hazards associated with its use, and the proper way to use it to avert risks.

Ingredients allow consumers to check for allergens or dietary restrictions, while safety warnings ensure they are informed about risks. Usage instructions provide guidance on how to safely and effectively use the product, which is crucial for products ranging from food to household chemicals.

The other options, while they may offer some insight into a product or company, do not fulfill the fundamental purpose of a product label focused on consumer safety and practical use. Information such as stock price, brand history, and promotional offers does not contribute to the immediate need for safety and proper usage that labels are designed to satisfy.