Final answer:
Andrew Carnegie's purchase and renovation of Skidoo Castle would have been good for the local people of Fornoch Firth, Scotland, as it would have brought investment, jobs, and opportunities to the community.
Step-by-step explanation:
Andrew Carnegie's purchase and renovation of Skidoo Castle would have been good for the local people of Fornoch Firth, Scotland.
Carnegie was known for his philanthropy and his efforts to improve the lives of working-class people.
If Carnegie had purchased and renovated Skidoo Castle, it is likely that he would have invested in the local community, creating jobs and opportunities for the people in Fornoch Firth.