What is the legal effect when a buyer waives a condition in an Agreement of Purchase and Sale before the condition deadline?

Option B: The seller must accept the waiver within 24 hours

This option incorrectly suggests that seller acceptance is required for a valid waiver. In reality, a buyer's waiver of their own condition is a unilateral act that takes immediate effect. The seller has no right to reject a waiver because the condition was inserted for the buyer's benefit, not the seller's. Requiring seller acceptance would undermine the buyer's fundamental right to waive protective conditions and could create unnecessary delays and complications in real estate transactions.

Option C: The waiver is invalid unless both parties agree

This option incorrectly states that both parties must agree to the waiver. Conditions in purchase agreements are typically unilateral rights benefiting the party who inserted them. A buyer can waive their own conditions without seller agreement because they are voluntarily giving up their own protection. Requiring mutual consent would essentially convert every condition waiver into a contract amendment, which contradicts established real estate law principles and would create unnecessary complexity in transactions.

Option D: The condition remains in place until the original deadline

This option incorrectly suggests that a waiver has no immediate legal effect and that conditions remain active until their original deadline. This contradicts fundamental contract law principles. When a party waives a right or condition, that waiver takes immediate effect. Allowing conditions to remain in place despite a valid waiver would create legal uncertainty and undermine the buyer's right to make their offer firm when they choose to do so.