Final answer:
Most dairy products are safe to consume for about a week (Option B) after the sell-by date, provided they've been stored properly. The specific shelf life can vary by product, and it's important to always check for signs of spoilage before consumption.
Step-by-step explanation:
When considering how long dairy products can be used after their sell-by date, it's important to note that this date is not an expiration date, but rather an indication of peak quality as determined by the manufacturer. Dairy products can typically be safely consumed for a certain time after the sell-by date if they have been stored properly. Specifically, most dairy products are safe to consume for about a week (Option B) after the sell-by date, although this can vary depending on the product.
For example, milk can generally last five to seven days past its sell-by date, while yogurt can often last one to two weeks. Hard cheeses can last longer, even up to a month if they are sealed and stored correctly. However, it's always crucial to use your senses; if the dairy product smells off, has changed in texture, or has visible mold (except in cheeses where mold is part of the ripening process, like blue cheese), it should not be consumed.