Answer:
The correct answer is letter "B": nonphysical constraints.
Step-by-step explanation:
According to the Theory of Constraints (TOC) a constraint is a limiting factor that does not enable companies to perform their work at their maximum capacity for their goals' achievement. In the same sense, nonphysical constraints are not material factors negatively influencing employees' actions. Wages cuts, reduction of benefits, unclear lines of command are examples of that kind of constraint.