To answer this question, we need to understand the history of Malayalam cinema.
Option A) Marthandavarma - This option is incorrect. Marthandavarma is not the first feature film in Malayalam. It is a historical novel written by C.V. Raman Pillai.
Option B) Vigathakumaran - This option is correct. Vigathakumaran, released in 1928, is considered to be the first feature film in the Malayalam language. It was directed by J.C. Daniel.
Option C) Balan - This option is incorrect. Balan is not the first feature film in Malayalam.
Option D) Prahlada - This option is incorrect. Prahlada is not the first feature film in Malayalam.
The correct answer is B) Vigathakumaran. This option is correct because Vigathakumaran is widely recognized as the first feature film in the Malayalam language.