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Example of primitive material that survived for the age of the solar system is :

  • A.Carbonaceous chondrites
  • B.Iron chondrites
  • C.Magnesian Achondrites
  • D.Olivine peridotite

Answer: A

Carbonaceous chondrites are primitive material that has survived since the formation of the solar system.

Carbonaceous chondrites, especially the CI type, have never been melted or differentiated. Their composition, apart from the most volatile elements, matches that of the Sun's photosphere, and they contain the oldest dated solids of the solar system (calcium-aluminium-rich inclusions, about 4.567 billion years old), together with water, organic compounds and presolar grains.

Iron meteorites and achondrites come from bodies that melted and differentiated, and olivine peridotite is a mantle rock, so none of them preserves primitive solar-system material. 'Iron chondrite' is not a meteorite class.

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