Real estate purchase and sale agreements can and should be complex. They involve an expensive commodity with significant obligations of both buyer and

Which of the following contracts involving real estate must be in writing to be enforceable?

Answer is D: all of the above. Contracts involving real estate are conventionally done in writing. Many property transactions must be effected through deeds too, which has to be in writing. This applies to nearly all Common Law jurisdictions and most Civil Code ones too.