(1) Mental illness continues to struggle for recognition as a significant contributor to poor health in spite of the existence of the Mental Healthcare Act 2017.
(2) The data reveals that an estimated one in seven Indians -or 197 million persons- suffered from mental disorders, at varying degrees of severity, in 2017.
(3) There is always more to human health than meets the eye.
(4) This is particularly important in the Indian cultural and political context, where the outward appearance of physical well-being is often considered the only visible marker of overall health.

From the first reading of the given sentences we can infer that the paragraph is about mental health and awareness surrounding it in the Indian context. Sentence 3 talks about there being more to health than meets the eye, while sentence 4 talks about 'outward appearance of physical well-being', we can infer that sentence 4 must follow sentence 3. This is enough to determine that option B is the likely choice if everything else is arranged correctly. Sentence 1 expands upon the way mental health is often overlooked and sentence 2 adds data to support this. The likely sequence, therefore, is 3412, which is option B.