Question:

Center lanes that are marked on each side by a solid yellow line and a broken yellow line are reserved for

A making left turns.

Explaination

A center lane between opposing lanes of traffic may be designated for left turns only. Vehicles from either direction may use this center lane for left turns. This lane, known as a shared center left-turn lane, is marked by parallel solid and broken yellow lines and is sometimes accompanied by white arrows on the pavement. Such a lane must never be used for passing.