Which of the following actions may contribute to an increase in safety level while driving on the road covered with snow?

On a snowy road, using winter tyres increases safety - answer B. Braking only with the handbrake (A) locks the rear wheels and makes the car spin, and accelerating hard (C) makes the wheels spin and causes loss of control.

A winter tyre has a softer rubber compound, which does not harden in frost, and many small cuts in the tread that bite into the snow; thanks to this, the braking distance on snow is several dozen per cent shorter than with a summer tyre. On snow you drive slowly and smoothly: you move off in a higher gear with low engine speed, brake early and gently, and enter bends only after you have slowed down. However, no tyres will change physics - grip on snow is always low.