The anger that descends on people when they get behind the steering wheel of a car used to be treated as a joke, but not anymore now that the problem has become widespeard. This is not to say that all offenders have psychological problems of driving cars. In fact, most of them are perfectly ordinary human beings who have no history of violence. There is ________ something deep in our nature that awakens when we start up a car engine.
openly
directly
clearly
frankly