Which among the following are NOT permanent winds ?

Correct option is C

Monsoon winds are not permanent winds; they are seasonal winds that reverse their direction with the change of seasons. The Westerlies, Easterlies, and Trade winds are examples of permanent or prevailing winds that blow consistently from specific directions over large areas of the Earth throughout the year. Monsoons, on the other hand, are characterized by their distinct reversal of direction between summer and winter, significantly affecting the climate of the regions they impact, such as the Indian subcontinent and parts of Southeast Asia.