What is the test for an anti-SLAPP motion?

"We review de novo the grant or denial of an anti-SLAPP motion. [Citation.] We exercise independent judgment in determining whether, based on our own review of the record, the challenged claims arise from protected activity. [Citations.] In addition to the pleadings, we may consider affidavits concerning the facts upon which liability is based. ( 425.16, subd. (b)(2); Navellier v. Sletten [(2002)] 29 Cal.4th [82,] 89 [(Navellier)].) We do not, however, weigh the evidence, but accept plaintiff's submissions as true and consider only whether any contrary evidence from the defendant establishes its entitlement to prevail as a matter of law. [Citation.]" (Park, supra, 2 Cal.5th at p. 1067.)

1. Arising from protected activity