Delivery offering allows consumers to search for and discover local restaurants, order meals, and either pick up at the restaurant or have the meal delivered and, in certain markets, also includes offerings for grocery and convenience store delivery.

Q1. Which ones are grammatical?
1. Delivery offering allows ...
2. Delivery offerings allow ...
3. The delivery offering allows ...
4. A delivery offering allows .....

Q2. What is the meaning of 'offerings' here in the sentence above? Can we substitute 'products' for offerings?

Q1. All are grammatically correct.

Q2. In that passage, ‘offering’ means ‘choice.’