Answer: Limited liability company
Step-by-step explanation:
In such a structure the owners and the firm are considered separate. The owners in a LLC could not be held personally liable for the debts and liabilities of their company.
The companies have the limited liability feature of the corporations while the profit distribution method depicts partnership structure.
In the given case, Toby and Keith wants to distribute profit among them and also do not want to raise any outside capital. Also they want limited liability in their organisation.
Hence a Limited liability company is an appropriate choice for them.