____ is the legal BAC limit for adults over 21 years of age driving non-commercial vehicles.

A.
0.04

B.
0.08

C.
0.02

D.
0.1

B. 0.08

The legal BAC limit for adults over 21 years of age driving non-commercial vehicles is B. 0.08.

The legal BAC (Blood Alcohol Concentration) limit for adults over 21 years of age driving non-commercial vehicles is option B, 0.08.