By giving a fair look to the diagram given above, it can be determined that the metamorphic rocks never have layers.
What are metamorphic rocks?
Metamorphic rocks are such rocks which are formed at the time of transformation of an old rock into a newer one. The process of the formation of metamorphic rocks is called metamorphism.
Furthermore, the rocks formed during the process of metamorphism do not have layers, as these rocks have been classified as foliates and non-foliates.
Hence, option A; metamorphic rocks do not have layers, is the correct interpretation of the diagram.
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