Answer:
Th answer is: Jim is liable for Ronald´s injuries and Sarah and Alex are also liable but only to the extent of their ownership in Super Company, LLC.
Explanation:
Ronald can sue Jim for committing a negligent act (for hitting and injuring him). But he can also sue Super Company, LLC, because when the accident happened Jim was acting within the scope of ordinary business. That means that Sarah and Alex will also be liable but at a limited extent. Sarah will only be liable up to $5,000 and Alex will be liable up to $15,000 (the amount of money they contributed to create Super Company, LLC)