Final answer:
The applicable statute of limitations for Ethan to sue Monica for breaching the contract is around 4 years.
Step-by-step explanation:
The statute of limitations determines the time limit within which a legal action must be filed. In this scenario, Ethan wants to sue Monica for breaching the contract by not having a licensed professional repair the leaky roof as promised.
The applicable statute of limitations for breach of contract varies depending on the jurisdiction. In most jurisdictions, the statute of limitations for breach of contract is typically around 4 years.