Final answer:
Arthur Andersen was convicted of c)willfully shredding records in the Enron case, signifying intentional destruction of pertinent documents.
Step-by-step explanation:
Arthur Andersen was convicted of obstruction of justice for willfully shredding records in the Enron case. The act of willful destruction refers to the intentional and purposeful destruction of documents or records that may be pertinent to an ongoing investigation, litigation, or legal proceedings.
In the context of the Enron scandal, Arthur Andersen's actions resulted in a serious breach of legal and ethical standards expected of accounting firms, ultimately leading to the company's downfall.