Answer:
The answer is Option C. carol can be sued for the money under theory of promissory estoppel
Step-by-step explanation:
When a person makes a promise, with or without a contract, and then goes back on his/her promise, the person can be sued for money under the theory of promissory estoppel.
This doctrine in contract law is used to stop people from going back on their promise from going back on a promise, especially when such a promise has prompted the aggrieved party to carry out certain actions. In this scenario, the aggrieved party can recover damages.
As we can see in the scenario presented above, the springfield humane society already started work on the hospital, because they had been promised a certain amount of money.