For the road test in the state of CA is it legal to wait for all the cars in the intersection to go before making an unprotected left turn?
Yes, since they have the right of way.
You are expected to proceed when SAFE to do so. It is legal in California to FAIL if the examiner feels you are not confident behind the wheel. Suggest you look to see what the examiner is looking for when you turn. It is page 13 to 17 in the examiners manual. https://www.dmv.ca.gov/portal/wcm/connect/bc1a1c82-aa8d-4209-b3ec-7381a70842e8/dl955.pdf?MOD=AJPERES&CVID= You yield the right-of-way to vehicles, bicyclists, or pedestrians when necessary for safety. • You accept the right-of-way: — Without causing confusion or blocking traffic flow. When it is safe to start.