Final answer:
In evaluating a firm's performance, an analyst would find it helpful to understand the broader economic and political environment, review annual reports of relevant business entities, and perform financial analysis through common-size statements and ratio calculations.
Step-by-step explanation:
Which of the following would be helpful to an analyst evaluating the performance of a firm? The answer is (d) All of the above. When evaluating the performance of a firm, an analyst can benefit significantly from understanding the economic and political environment in which the company operates, as these factors can have a profound impact on the business's potential for success and growth.
Moreover, reviewing the annual reports of a company's suppliers, customers, and competitors can offer valuable insight into the market dynamics, supply chain efficiencies, and competitive landscape—all critical elements for benchmarking the company's performance.
Lastly, preparing common-size financial statements and calculating key financial ratios are essential tasks for an analyst. These activities provide a quantifiable and standardized method for assessing the financial health and performance of a company, aiding comparisons across time periods and industry benchmarks.