What danger is most imminent during an approach to an airfield situated in a valley, with strong wind aloft blowing perpendicular to the mountain ridge?

Question

Question PPL(A) - Private Pilot License - Meteorology

QuizVDS · Accepted Answer

Wind shear during descent, wind direction may change by 180°

QuizVDS · Answer

Reduced visibilty, maybe loss of sight to the airfield during final approach

QuizVDS · Answer

Formation of medium to heavy clear ice on all aircraft surfaces

QuizVDS · Answer

Heavy downdrafts within rainfall areas below thunderstorm clouds

Id 109 - PPL(A) EN - What danger is most imminent during an approach to an airfield situated in a valley, with strong wind aloft blowing perpendicular to the mountain ridge?