The rock texture with aligning parallel platy grains is to exhibit metamorphic foliation.
Most metamorphic rocks have a platy or planar structure which is caused by the parallel alignment of micas and/or other flat mineral so this structure is called foliation.
Metamorphic rocks can be foliated or non-foliated.
Foliated metamorphic rocks will display banding or layering of its mineral constituents while non-foliated metamorphic rocks will not.
Answer: the correct option is : highly developed cell- cell communication.
Explanation: In complex multicellular organisms, cell - cell communication also known as cell signalling is part of any communication process that leads basic activities of cells and coordinates multiple cell functions.
