To answer this question, we need to know the music director of the cult film "Kadhal."
Option A) G.V. Prakash - This option is incorrect because G.V. Prakash is a renowned music director in the Tamil film industry, but he did not compose the music for the film "Kadhal."
Option B) Joshua Sridhar - This option is correct. Joshua Sridhar is the music director of the cult film "Kadhal." He is known for his work in Tamil cinema and has composed several popular songs.
Option C) Vijay Anthony - This option is incorrect. Vijay Anthony is also a music director in the Tamil film industry, but he did not compose the music for the film "Kadhal."
Option D) Ranjith - This option is incorrect. Ranjith is a playback singer in the Tamil film industry, but he is not the music director of the film "Kadhal."
The correct answer is B) Joshua Sridhar. He composed the music for the cult film "Kadhal."