I’m not sure but I think it’s b
The builder is at fault, however if there is no legal document that he has signed to say that he would complete the work and help them, then he isn’t liable.
Answer:
Keep personal information private.
Protect passwords, PINs, and usernames.
Keep your eyes on your billing statements.
Order your credit report.
Invest in a shredder.
Don’t answer the door for strangers and keep your doors and windows locked.
Let people know if you are going out of town.
If you have a durable power of attorney, know the ins and outs.
If it’s too good to be true, it is.
Know your vulnerabilities.