Final answer:
All of the options provided—ingredient list, name and address of the vendor, and net contents of the package—are required on food labels, making the answer d. 'all of these'.
Step-by-step explanation:
The question asks about what information is required on all food labels. According to the regulations for labeling on packaged food, several details are mandated. These include the nutrition facts label, which provides the nutrient content per serving and also lists the ingredients of the food. Let's address the options provided:
- Ingredient list: This is a mandatory component that lists all the ingredients in the food product.
- Name and address of the vendor: This information is also required as it indicates the manufacturer or distributor of the product.
- Net contents of package: This detail specifies the amount of the product within the package, usually in weight, volume or a numerical count.
The correct answer is that all of these details are required on food labels.