Answer: The correct answer is A new employee was being trained to make donuts.
Explanation:
Analyze each of the options to determine which would lower production:
OPTION RESULT/WHY
1 A new employee would need training and SLOW production
2 Increasing the rate of donut making would RAISE production
3 Lowering the price of donuts would RAISE sales & production
4 Buying a new machine would RAISE production (make them faster)
As we can see above, the first option is the only one that would slow production.