To answer this question, we need to have some knowledge about the different cities in India and their notable landmarks.
Option A) Ranchi, Jharkhand - This option is incorrect because Ranchi does not have a "Gandhi Stupa" dedicated to Mahatma Gandhi.
Option B) Vadodara, Gujarat - This option is incorrect because Vadodara does not have a "Gandhi Stupa" dedicated to Mahatma Gandhi.
Option C) Vijayawada, Andhra Pradesh - This option is correct because Vijayawada has built a 15.8 m high "Gandhi Stupa" dedicated to Mahatma Gandhi.
Option D) Allahabad, Uttar Pradesh - This option is incorrect because Allahabad does not have a "Gandhi Stupa" dedicated to Mahatma Gandhi.
The correct answer is Option C) Vijayawada, Andhra Pradesh. This option is correct because Vijayawada has built a 15.8 m high "Gandhi Stupa" dedicated to Mahatma Gandhi.