Without authorization, Rolf contracts on behalf of Sari to have Tige paint the interior and exterior of Sari’s house. Sari ratifies the contract. Later, Sari tries to rescind the part of the contract re¬lat¬ing to the exterior. This attempt will be
a. partly successful.
b. partly unsuccessful.
c. totally successful.
d. totally unsuccessful.

The question is based on agent, principal relationship , The agent authority means the exact nature and the extent of power possessed by agent. This is the key feature of agency relationship because it involves the power of an agent to affect his principal 's legal relationship with the third party.

The scope of the agent's authority is very important and determines the relationship between the principal and the agent. This power flows from authority conferred by the principal or deemed to exist by law .The principal is bound by the act of the agent if what the agent has is authorized by him .if the act is not authorized, then the principal is not bound .

In this case ,the principal ratifies the contract., in a situation whereby the principal approves the act of the agent after the act in question has been performed. In such a situation , the principal will be bound by the act.This situation is referred to as ratification.