Answer:
1. A written contact that evidences the agreement CAN satisfy the writing requirement.
2. A check CAN satisfy the writing requirements for the Statute of Frauds.
But not in this case since the check was returned unendorsed.
3. Who must sign the writing?
The person against whom the contract is being enforced, in this case the Harts.
4. Did the Harts sign the writing that Buffaloe gave to them?
No they didn't, since the check was not endorsed.