From the choices, I think the correct answer would be option 4. The proper procedure for delivering prepared hot food off-site would be maintain hot food temperatures above 135 degrees Fahrenheit or 57 degrees Celsius. At this temperature, you would be able to deliver the food still warm while making sure that it is cooked enough, not under or over cooked. This temperature is a fair enough level to be able to ensure that the delivered food is not cold and would still be like as if it was cooked recently. Also, along with maintaining this temperature, it would be best to deliver it very fast to the customer.
Easy your answer is cumulus