What is the test for establishing that a single witness is sufficient to convict a defendant?

For purposes of this appeal, we emphasize that "'[r]esolution of conflicts and inconsistencies in the testimony is the exclusive province of the trier of fact. [Citation.] Moreover, unless the testimony is physically impossible or inherently improbable, testimony of a single witness is sufficient to support a conviction. [Citation.]' (People v. Young (2005) 34 Cal.4th 1149, 1181.)" (People v. Dominguez (2010) 180 Cal.App.4th 1351, 1356.)