Solution:The temples and their deities are:
• Lakshman Temple, Sirpur (a): Dedicated to Vishnu (IV), this temple stands as a testament to the architectural prowess of ancient India.
• Vaitala Temple, Bhubneshwar (b): This temple worships Durga (III) and is a significant religious site in Bhubneshwar.
• Krishna Temple, Ellora (c): As the name suggests, it's dedicated to Lord Krishna, an avatar of Vishnu (IV).
• Meguti Temple, Aihole (d): This temple is dedicated to Jain Tirthankara Mahavir (II), showcasing the rich Jain architectural heritage.