Answer:
A) Closure
Step-by-step explanation:
Closure refers to a state wherein a a store's agreement with a specific brand ends post which the store stops selling the products of such a brand.
In the given case, Mark assumed the shoe manufacturer having shut down it's operations and having stopped manufacturing shoes altogether.
This is not the case. It means the shoe store won't stock that particular brand or the contract between the shoe store and the brand has closed or expired.
Thus, this is a case of closure.