Answer:
Identifying customers with lifetime value to the seller ( C )
Step-by-step explanation:
All the steps are somewhat important to sellers but Identifying customers with a lifetime value to the seller is of utmost importance tot the lifetime of the business because the success of a business is based on its longevity and proper procedures of sales and production
keeping all customers at all cost is not a very good step because it might be detrimental to the standards of the business because it will involve making alot of compromise by the seller.
keeping only loyal customers is also not a good step because they might turn to disloyal customers anytime, also working to attract new customers is not bad but not at any cost.