Final answer:
The result of fewer mistakes in terms of efficiency is increased efficiency.
Thus, the correct option is 2.
Step-by-step explanation:
The result of fewer mistakes in terms of efficiency is increased efficiency. When there are fewer mistakes, tasks can be completed more quickly and accurately, leading to a higher level of efficiency.
For example, in a manufacturing process, if there are fewer mistakes in assembling a product, the production line becomes more efficient as less time and resources are wasted on rework or fixing errors.
Therefore, the correct option is 2) Increased efficiency