What is the author’s main purpose in the passage about food date labels?
Read the passage: Many people throw away food simply because they misunderstand the dates printed on its packaging. In the United Kingdom, a 'use by' date appears on foods that spoil quickly, such as fresh meat, fish and ready meals. These foods should not be eaten after that date, even if they look and smell fine, because harmful bacteria may be present. A 'best before' date, by contrast, is about quality rather than safety. Biscuits, rice, tinned goods and many other items are usually safe to eat after their best before date, although they may have lost some flavour or crispness. Learning the difference between the two labels can help households save money and cut down on the large amount of edible food that ends up in the bin.
Correct answer D. To explain the difference between two kinds of date labels
The passage defines 'use by' and 'best before' dates and explains what each means, so its purpose is to inform readers about the difference between them.
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