Jokewise, it's the lose nut behind the wheel.
Driver inattention.
the blind spots
Your greatest danger is Panic
The greatest danger is flying or falling debris
The danger of reduced traction is greatest when it first starts raining. This is because there is oil on the road and the rain turns the oil spots into slippery areas. Wet road surfaces due to rain and snow can cause reduced traction as can sleet.
The greatest danger from getting HPV is cancer and death.
Packing Group I (PG I) is the greatest danger; Packing Group III (PG III) is the least.
stampedes
The greatest danger in Antarctica is freezing to death by hypothermia.
The greatest danger for a person with hypothermia, unless treated in time, is death.
Hunters.
The answer is a loaded gun
I should think above anything we are the greatest danger. for example wild tortoises are taken from the wild and illegal transported and sold as pets