Step 1: Understanding the Concept:
The question asks to identify the very first full-length feature film produced in India. This is a landmark event in the history of Indian cinema.
Step 2: Detailed Explanation:
The first full-length Indian feature film was Raja Harishchandra, a silent film released in 1913.
It was directed and produced by the legendary Dadasaheb Phalke, who is often regarded as the "father of Indian cinema."
The film is based on the story of the noble King Harishchandra from Hindu mythology.
Other Options:
- Alam Ara (1931): This was the first Indian film with sound, known as a "talkie," but not the first feature film.
- Shree 420 (1955) and Jagriti (1954) are classic films from a much later period in Indian cinema.
Step 3: Final Answer:
The correct answer is Raja Harishchandra, as it was India's first full-length feature film.