Answer:
A) Web-based e-mail accounts, private bank records, tax returns, and brokerage records.
Step-by-step explanation:
Generally a third party needs a court order (subpoena) in order to obtain private information, but that information is extremely useful when you are investigating possible frauds or other illegal activity. For example, most people keep their money on a bank or they invest it some type of asset, so if you want to compare someone's earnings vs. the total assets he/she possesses, access to their bank account, tax and brokerage records is crucial.