Final answer:
All of the companies listed (Enron, Tyco, Adelphia, Sunbeam) had significant fraud scandals, which led to the implementation of the Sarbanes-Oxley Act in 2002 to increase confidence in corporate financial information and protect investors.
Step-by-step explanation:
The correct answer to the question Which of the following had a recent fraud scandal? with the options Enron, Tyco, Adelphia, Sunbeam, and 'All of the above' is All of the above. Each of these companies has been involved in fraudulent activities that led to scandals. Enron's collapse in 2003 due to massive accounting fraud was one of the most notorious scandals, leading to long prison sentences for its top executives. Tyco International also suffered from significant internal financial scandals.
Moreover, the impact of these and other corporate scandals resulted in the formation of the Sarbanes-Oxley Act in 2002 to protect investors and increase confidence in the financial information disclosed by public companies. Overall, these scandals highlight the importance of ethical accounting practices and the severe consequences of fraudulent activities within corporations.