Final answer:
The loss of cash in this scenario would typically be considered as a result of theft, for which Peg would be held responsible.
Step-by-step explanation:
The loss of cash in this scenario would typically be considered as a result of theft. While Jim gave his sister Peg authority to handle his financial matters, including cashing dividend checks, the responsibility for safeguarding the cash ultimately falls on Peg. Since the cash was stolen after Peg cashed the checks, she would be liable for the loss.