Final answer:
Common signs of driving behavior that may indicate a driver has been drinking alcohol include straddling lane lines, weaving, and stopping for no apparent reason.
Step-by-step explanation:
Common signs of driving behavior that may indicate a driver has been drinking alcohol include:
- Straddling lane lines: The driver may have difficulty maintaining their position within a lane, often crossing over the lines or driving on the line itself.
 - Weaving: The driver may make sudden and frequent changes in speed and direction, moving in an erratic or wobbly pattern.
 - Stopping for no apparent reason: The driver may randomly brake or stop, even when there is no obstruction or traffic signal.
 
Therefore, the correct answer is D. all.