What is AD to AB in simplest form

According to binet, mental age relates to chronological age because a. they are the same thing b. mental age involves calculating the chronological age at which a person functions c. chronological age involves calculating how a person is mentally functioning d. they are opposites 38

Pleas give me brief explanation about deterministic model in advanced hydrology

The torque output of an engine is usually measured in the units of a rpm b bhp c foot pounds d feet per pound