Civil Code § 1581
CHAPTER 3. Consent
Consent can be communicated with effect, only by some act or omission of the party contracting, by which he intends to communicate it, or which necessarily tends to such communication.
CHAPTER 3. Consent
Consent can be communicated with effect, only by some act or omission of the party contracting, by which he intends to communicate it, or which necessarily tends to such communication.