Final answer:
An agent is not permitted to display and/or distribute personal business cards at a marketing/sales event.
Step-by-step explanation:
The material that an agent is typically not permitted to display and/or distribute at a marketing/sales event would be:
c. Personal business cards.
While brochures approved by the insurance company, educational materials on Medicare options, and even snacks and refreshments are generally acceptable at marketing/sales events, personal business cards might be considered as self-promotion and could potentially conflict with regulations or guidelines imposed by the insurance company or regulatory bodies. Agents are often expected to prioritize the distribution of approved and regulated materials provided by the insurance company to maintain compliance and professionalism during such events.