A customer has agreed to purchase a risky investment.

The RR’s actions are impermissible because an RR may not sign a document on behalf of a customer to satisfy documentation requirements, regardless of whether the signature is “digital” or on paper. Signing for a customer is essentially a falsification or “signature of convenience,” which is a serious compliance violation. Firms require customer signatures on certain disclosures to evidence that the customer received and acknowledged the risks and terms; if the customer is unavailable, the correct approach is to delay the transaction, obtain the proper signature, or follow firm-approved alternative procedures—not to sign for the customer. Therefore, C is correct.

Choice A is incorrect because the customer’s unavailability does not justify falsifying documentation. Choice B is incorrect because suitability and oral authorization do not permit the RR to execute a customer signature requirement; suitability does not waive documentation rules. Choice D is incorrect because the prohibition is not about the medium; signing on the customer’s behalf is improper whether digital or hard copy.

On the SIE, this ties to books and records integrity and prohibited practices: firms and associated persons must maintain accurate records and cannot create misleading documentation. Regulators treat record falsification as a major violation because it undermines supervision, customer protection, and regulatory examinations.