Correct option is B
Statements:
(i) Some of the dance forms taught in all the dance classes of Delhi are Hip-Hop, Contemporary and Kathakali.
(ii) None of the dance classes of Delhi teach Kuchipudi.
(iii) Some of the dance classes of Delhi teach Salsa and Odissi.
Conclusions:
Salsa is taught in every dance class of Delhi.(False, he statement only says some classes teach Salsa, not all).
Some of the dance classes of Delhi do not teach Kathakali. (False, it does not confirm that some dance classes do not teach Kathakali).
There isn't a single dance class in Delhi that doesn't teach Hip-Hop. (True, the first statement says that Hip-Hop is included in the dance forms taught in all dance classes).
Only conclusion (iii) follows.
Thus, correct option is (b).