Final answer:
Cynthia Cooper faced challenges including uncovering accounting fraud, resistance from higher-level executives involved in the fraud, and potential negative consequences of exposing the fraud.
Step-by-step explanation:
Cynthia Cooper, the former Vice President of Internal Audit at MCI WorldCom, faced several challenges when confronting the unethical behavior at the company. One of the main challenges was uncovering the accounting fraud that involved inflating revenue and hiding expenses, which required extensive investigation and analysis of financial records. Cooper also faced resistance from higher-level executives who were involved in the fraud and were determined to maintain the deception. Additionally, she had to navigate the potential backlash and negative consequences of exposing the fraud, such as damage to her professional reputation and potential legal repercussions.