Which phenomenon originates during heavy condensation nuclei, winds weak and high humidity?

Question

Question EASA Drone Quiz - Meteorology

QuizVDS · Accepted Answer

It must be paused by leaving the drone hovering until the improvement of visibility

QuizVDS · Answer

It is indifferent as long as I have had the foresight to wear appropriate sunglasses

QuizVDS · Answer

On the side

QuizVDS · Answer

It must be cancelled

Id 422 - EASA Drone Quiz – Drone Pilot Certification - Which phenomenon originates during heavy condensation nuclei, winds weak and high humidity?