Limestone changes into ________ due to metamorphism.

A. Marble

B. Quartzite

C. Gneiss

D. Schists

Answer: Option A

Solution(By Examveda Team)

Limestone changes into Marble due to metamorphism. Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. It is composed primarily of the mineral calcite (CaCO₃) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite.