The things which Carrie Franklin can do to protect herself from possible scam include:
Based on the given question, we can see that Carrie Franklin received some visitors who claimed to be chimney sweepers from a company and she would have to pay them for cleaning her chimney.
It is important that she verifies that they are a legitimate company then look them up in the telephone listing and if she has any additional suspicions she can call the police just to be safe.
Read more about scam here:
https://brainly.com/question/3422329