Final answer:
Among the options presented, providing better training is a viable method to increase productivity as it invests in the human capital of the workforce, leading to a more skilled and efficient team.
Step-by-step explanation:
To increase productivity, several methods can be considered. Hiring more employees may initially seem like a straightforward way to bolster productivity by increasing the quantity of labor. However, simply adding more employees without improving their efficiency may not result in higher productivity. In contrast, providing better training elevates the human capital of the workforce, which is an investment in the education and skills of the laborers leading to a more proficient and effective workforce. This can significantly enhance productivity as workers become more adept at performing their tasks.
On the other hand, increasing work hours might have short-term effects; but over time, it could lead to employee burnout and decreased quality of work, hence reducing productivity. Reducing workload without strategic adjustments could potentially have an adverse impact on productivity if the output volume decreases more than the gains achieved through increased efficiency. In summary, providing better training stands out as a viable option to raise productivity as it fosters competent, skilled, and motivated employees who can contribute meaningfully to the economy.