To answer this question, we need to understand the context of the options provided.
Option A) "Ek anhauki prem katha" - This option is incorrect because "Ek anhauki prem katha" is not the correct title of the movie "Gadar."
Option B) "One man Power" - This option is incorrect because "One man Power" is not the correct title of the movie "Gadar."
Option C) "Ek prem katha" - This option is correct because "Ek prem katha" is the correct title of the movie "Gadar."
Option D) "Ek Indian ki dastan" - This option is incorrect because "Ek Indian ki dastan" is not the correct title of the movie "Gadar."
Therefore, the correct answer is Option C) "Ek prem katha" because it is the correct title of the movie "Gadar."