All workers in the factory have five children each.
Everybody in the factory has children.
Some of the factory workers have more than five children.
Only one worker in the factory has exactly five children. E. None of these.
Answer is Wrong!
Answer is Right!
The correct answer is D. Only one worker in the factory has exactly five children.
Option A is incorrect because it is possible that some workers in the factory have more than five children, or that some workers have no children.
Option B is incorrect because it is possible that some workers in the factory do not have children.
Option C is incorrect because it is possible that some workers in the factory have exactly five children, while others have more or fewer than five children.
Option E is incorrect because at least one worker in the factory has exactly five children.