Final answer:
The National Do Not Call Registry has limited unsolicited outbound telemarketing by businesses in recent years.
Step-by-step explanation:
The implementation of the National Do Not Call Registry has limited unsolicited outbound telemarketing by businesses in recent years. This means that businesses are restricted from making unsolicited calls to potential customers for marketing purposes.
The National Do Not Call Registry allows individuals to register their phone numbers and opt out of receiving unsolicited telemarketing calls. Businesses are required to check this registry and refrain from calling the numbers listed on it.
Examples of calls that have been limited through this registry include calls promoting products or services, fundraising calls by nonprofit groups, and calls that businesses make to other businesses (business-to-business telemarketing).