Final answer:
To evaluate the performance of a firm, an analyst would find it helpful to review annual reports, understand the economic and political environment, and prepare financial statements and ratios.
Step-by-step explanation:
For an analyst evaluating the performance of a firm, all of the following options would be helpful:
- Reviewing the annual reports of a company's suppliers, customers, and competitors provides insights into the external factors that may affect the firm's performance.
- Understanding the economic and political environment in which the company operates helps in gauging the impact of macroeconomic factors on the firm's performance.
- Preparing common-size financial statements and calculating key financial ratios for the company being evaluated allows for a quantitative assessment of the firm's financial health and performance.
Therefore, the correct answer is 4) All of the above.