Ensuring the availability of the products and services as and when required by the customers is . . . . . utility.

Place utility

PLACE

for sure the place 

d) Possession

I think The Place

The answer is time ability. whenever a customer demands a product and service from your company at any time, as a buyer you have to keep in mind that customers can make his request at any time, so the availability of a product or service is based on time.

Thanks for the invitation

I believe it,s the option (B) place utility.

place utility is the answer

Option B

Place,