Thanjavur periyakoil has been made out of which stone?

Hard Granite is the correct answer. The Brihadeeswarar Temple (Thanjavur Periyakoil) was constructed primarily from hard granite rock. This is a well-documented architectural fact - the temple required transporting massive granite stones from distant quarries. Soft Marble and Aplite are incorrect, and 'Hard Monzogranite' is not the standard term used for this temple's construction material.