Answer:
D) Jake's parents' promise would be enforceable under the doctrine of promissory estoppel.
Step-by-step explanation:
Promissory estoppel is a legal principle that states that a promise should be enforceable by law, even if made without formal contract if the promisee has relied on that promise on his subsequent actions and decisions.
Since Jake's decision of not leaving the farm relied entirely on his parents' promise, the promise should be enforceable under he doctrine of promissory estoppel.
The answer is D) Jake's parents' promise would be enforceable under the doctrine of promissory estoppel.