All managers are employees. Some employees are skilled. Which conclusion is valid?
Correct: B
The middle term 'employees' is distributed in the first premise (All M are E) but undistributed in the second premise (Some E are S). This is the fallacy of the undistributed middle. We cannot conclude anything definite about managers and skilled people. 'Some managers are skilled' is not guaranteed because the skilled employees may not include any managers. The syllogism is invalid.