In front of which of the following shrines, a 'hall' was built by Krishnadeva Raya to mark his accession?

Virupaksha Temple

The correct answer is Option (4) → Virupaksha Temple

The "hall" built by Krishnadeva Raya to mark his accession is known as the "Raya Gopuram" (or Raya Tower), and it is located in front of the Virupaksha Temple in Hampi, Karnataka, India. The Raya Gopuram is an impressive and ornate structure that served as a ceremonial gateway and symbol of his reign. Krishnadeva Raya, the Vijayanagara Empire's celebrated ruler, commissioned the construction of this tower to commemorate his accession to the throne. The Virupaksha Temple and its surroundings are significant historical and architectural sites, and the Raya Gopuram remains a testament to Krishnadeva Raya's patronage of art and culture during his rule.

So, the correct option is [4].