Answer: Option A, C, D, and E
Step-by-step explanation:
From the question given all options except option B are factors that can lead to reduction in Labour requirement of a business organization.
Option B involves students returning back to school which would lead to an increase in sales at the bookshop, this would lead to an increase in required Labour needed to man the bookshop.
The other options in the question are signs of struggling businesses which would need to lay off workers.