"If a customer calls his registered representative and states the following: "I just got my account statement and I see that your recommendations have lost 15% in value. Clearly, you have made unsuitable recommendations and you will be hearing from my attorney." Which statement is TRUE under FINRA rules regarding how the representative should handle this?"

The representative does not need to take any actions

Explanation:

The representative should not take any actions yet because the customer has not made his complaints in writing. Under FINRA, a customer's complaint is defined as one received by the company in writing through mail(hand written)or electronic mail(email). The financial regulatory authority abbreviated FINRA is a self regulatory organization and non governmental organization in the US that makes and enforces rules and best practices that govern brokerage/security/broker-dealer firms and safeguard the public against fraud and malpractices that might emanate from such firms.