The
has the longest duration, or length.

insulin

Explanation:

The insulin that has the longest duration of action, which is the length of time it works, is usually either the intermediate-acting insulins such as NPH insulin (human), or the long-acting insulins such as insulin glargine (Lantus) or insulin detemir (Levemir). Their duration of action can be up to 24 hours long.

if it a fruit then the supermarket!

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