The correct answer is D. Mahi.
The Modhera Sun Temple is a 11th-century Hindu temple dedicated to the Sun god Surya. It is located in the town of Modhera, in the Mehsana district of Gujarat, India. The temple is built on the banks of the Mahi River.
The temple is a fine example of Solanki architecture. It is built in the Nagara style, which is characterized by its tall shikhara towers. The temple is decorated with intricate carvings and sculptures.
The temple is a popular tourist destination. It is also a place of pilgrimage for Hindus.
The other options are incorrect.
Option A: The Aji River is a river in Gujarat, India. It is a tributary of the Sabarmati River.
Option B: The Ambica River is a river in Gujarat, India. It is a tributary of the Narmada River.
Option C: The Pushpavati River is a river in Gujarat, India. It is a tributary of the Mahi River.