A manager claims, 'Since we installed ergonomic chairs, employee morale has improved significantly. Therefore, the chairs are directly responsible for the boost in morale.' Which of the following is an unstated assumption in the manager's argument?
✓ Correct Answer: Option B
The argument assumes a direct causal link between the chairs and morale, ignoring other potential factors that might have contributed to the improvement, such as recent company successes or new benefits.