question 9 of 10\nwhen metamorphic rock melts and turns into lava, ______ is conserved.\na. matter\nb…

question 9 of 10\nwhen metamorphic rock melts and turns into lava, ______ is conserved.\na. matter\nb. density\nc. volume\nd. area
Answer
Answer:
A. matter
Brief Explanation:
According to the law of conservation of mass, matter is conserved in physical and chemical changes like rock - to - lava transformation.