Answer:
(c). no longer satisfies a sufficient number of customers
Explanation:
Product deletion refers to removal or discontinuance of a product from the product line when such a product has been consistently incurring losses since a number of years and it's further continuation would adversely affect the other products and profitability.
A product is usually deleted from the product line on the grounds of it's failure in satisfying a sufficient number of customers.
Hence, the correct option is (c). no longer satisfies a sufficient number of customers.