Final answer:
Salespersons making cold calls must check the national Do Not Call Registry and state-specific lists to respect consumer privacy, be persistent yet polite, and use various methods, including directories and random-digit dialing, for their calling practices.
Step-by-step explanation:
When making cold calls, salespersons must ensure that the individuals they are calling are not on any Do Not Call lists which protect consumer privacy. This includes checking the national Do Not Call Registry, state-specific lists such as Florida's Do Not Call List, and any other relevant lists that might include cell phone numbers or unlisted numbers. Additionally, salespeople should be aware of biases that could arise from the pool of individuals being called, such as those without telephones, or individuals who are not at home at the time of the call, as mentioned in the reference material.
Further to their due diligence in respecting privacy lists, salespersons should also be persistent yet courteous when following up with potential customers, offering them solutions that suit their needs. As with pollsters who conduct surveys, salespersons can also use various directories or random-digit-dialing for their cold calling practices.