Option d is the correct answer. The collection of the writings of the Saivite saints is considered as the Fifth Veda. The name of the above collection is Tirumurai. Tirumurai is a twelve-volume compendium of songs or hymns in praise of Shiva, the supreme deity of Shaivism. Tirumurai means "holy division" or "sacred book". The Tirumurai is regarded as the fifth Veda or the Panchama Veda by the Tamil people, as it contains the essence of the Vedas and conveys the message of Shaiva Siddhanta, a school of philosophy that teaches the path to liberation through devotion to Shiva. The Tirumurai is also revered as the Tamil Marai or Tamil Veda, as it represents the rich and ancient literary heritage of the Tamil language and culture