What causes of action have been deemed waived or abandoned?

^7. Though appellant's claims flow from his arrest, he alleged several distinct causes of action against the City. But because he has confined his arguments on appeal to the question of probable cause, we deem any other challenge to the grant of summary judgment waived. (See, e.g., Benach v. County of Los Angeles (2007) 149 Cal.App.4th 836, 852 ["When an appellant fails to raise a point, or asserts it but fails to support it with reasoned argument and citations to authority, we treat the point as waived"]; Reyes v. Kosha (1998) 65 Cal.App.4th 451, 466, fn. 6 [issues not raised in appellant's brief are deemed waived or abandoned].)