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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Saurabh 1
Most probable answer has to be (A) .... As Kyanite is the high pressure polymorph of Al2SiO5 and it is found in high pressure metamorphic terrain. Upon upliftment there is a slight variation in physical condition (mainly in pressure is observed). So you can have various transitions in polymorphs. And that includes from Kyanite-Sillimanite and Kyanite to Andalusite. (But never from Andalusite to Kyanite as Andalusite is found dominating in low pressure regimes).