Final answer:
A REALTOR must disclose that an accepted offer exists on a property that is continuing to be shown.
Step-by-step explanation:
A REALTOR is required to disclose that an accepted offer exists on a property that is continuing to be shown. This is known as a pending sale and it is important for potential buyers to be aware of this information so they can make informed decisions about whether to continue viewing the property or submit a backup offer. The disclosure of an accepted offer helps maintain transparency and fair dealings in the real estate market.