Given that the talk is about food, which of the following options are correct?
1. 'What is the term of storage?'
2. 'What is the storage length?'
3. 'What is the shelf life length?'
4. 'What is the retention period?'
What's the shelf life?
When's the use by date?
When's the sell by date?
When's the best before date?
How long does it keep?
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.