Those actions that avert harm in a high-risk situation, such as stopping a car before it hits a pedestrian or installing traffic lights at dangerous intersections are considered prevention.

The correct answer is "Second Prevention".

Second Prevention is the act of interpreting future related injuries, so that a person may already come up with solutions to prevent accidents from happening, such as based on the given example, wherein traffic lights are placed in dangerous intersections, so that collisions or accidents may be avoided.

Ghana, first of the great medieval trading empires of western africa (fl. 7th–13th century). it was situated between the sahara and the headwaters of the sénégal and niger rivers, in an area that now comprises southeastern mauritania and part of mali.