A center lane marked with left-turn arrows for traffic in both directions is reserved for:

Correct answer: B. – Left-turn maneuvers
In Massachusetts, a shared center turning lane is used by vehicles preparing to turn left. Drivers traveling in either direction may enter it for the turn, but they may not use it as an ordinary travel or passing lane. Watch for vehicles entering the lane from the opposite direction.
Source: Massachusetts Driver’s Manual — Ch. 4, “Left Turns from Center Lanes”



