This is the 7452nd most frequent Dutch word.
brandende
Burning.
Here, 'brandende' is used as a present participle adjective describing 'vlam' (flame). It emphasizes the action of burning.
De kaars heeft een brandende vlam.
The candle has a burning flame.
'Brandende' here metaphorically describes the urgency or intensity of the 'vraag' (question), conveying its importance.
Hij heeft een brandende vraag gesteld.
He asked a burning question.
In this sentence, 'brandende' is used to describe the intensity of the 'hitte' (heat) associated with the sun. It functions as an adjective.