Answer:
b. At the signing of the contract
Step-by-step explanation:
A contract can be defined as an agreement between two or more parties (group of people) which gives rise to a mutual legal obligation or enforceable by law.
Mutual assent is a legal term which represents an agreement by both parties to a contract. When two parties to a contract both have an understanding of the parameters, terms and conditions surrounding a contract, it ultimately implies that they are in agreement; this is generally referred to as mutual assent and it is at this point they (buyer and seller) sign the contract. Therefore, mutual assent connotes agreement, acceptance and consent to a contract by both parties.
Hence, in most transactions, the buyer is accepting the condition of the property at the signing of the contract as an approval or consent to the terms and conditions.