Question

which of the following is true about profit margin?
the optimal profit margin is between 2 - 5%.
a higher profit margin is worse for shareholders.
lower profit margins indicate greater efficiency.
profit margins can vary significantly by industry.

Explanation:

• For the option "The optimal profit margin is between 2 - 5%", there's no universal optimal profit margin as it depends on the industry, business model, etc. Different industries (e.g., software vs. grocery) have very different typical profit margins, so this is incorrect.
• For "A higher profit margin is worse for shareholders", generally, a higher profit margin means the company is more profitable, which is better for shareholders as it can lead to higher dividends or stock value growth, so this is incorrect.
• For "Lower profit margins indicate greater efficiency", lower profit margins usually mean the company is making less profit relative to revenue, which is not an indicator of greater efficiency (higher efficiency often leads to higher profit margins as costs are controlled better), so this is incorrect.
• For "Profit margins can vary significantly by industry", this is true. For example, industries like technology (software) often have high profit margins (e.g., 20 - 30% or more), while industries like retail (grocery) have low profit margins (e.g., 1 - 3%) due to different cost structures, competition levels, and value - added aspects of their products/services.

Answer:

D. Profit margins can vary significantly by industry.