You are driving on a 2 lane highway and are passing a large truck if the driver of the truck blinks his lights it means

If the truck driver blinks his lights when you are about to pass him it means it is safe to pass so it is a courtesy of the truck driver to signal to those following him and a recognition that it can be difficult to see around a long truck. 

Ithink is b. or c.

The answer is a.the rorschach inkblot test uses 10 symmetrical inkblots in which the subject describes what he or she sees as a way to predict personality. the tat, on the other hand, asks the participant to write a short stories about ambiguous sketches.