Cal. Code of Civil Procedure § 2028.040

(a) A party who objects to the form of any question shall serve a specific objection to that question on all parties entitled to notice of the deposition within 15 days after service of the question. A party who fails to timely serve an objection to the form of a question waives it. (b) The objecting party shall promptly move the court to sustain the objection. This motion shall be accompanied by a meet and confer declaration under Section 2016.040. Unless the court has sustained that objection, the deposition officer shall propound to the deponent that question subject to that objection as to its form. (c) The court shall impose a monetary sanction under Chapter 7 (commencing with Section 2023.010) against any party, person, or attorney who unsuccessfully makes or opposes a motion to sustain an objection, unless it finds that the one subject to the sanction acted with substantial justification or that other circumstances make the imposition of the sanction unjust.