(B) Seed dormancy is primarily induced by the plant hormone Abscisic acid $(ABA)$.$ABA$ acts as a growth inhibitor that prevents germination in seeds,

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(B) Seed dormancy is primarily induced by the plant hormone Abscisic acid $(ABA)$.$ABA$ acts as a growth inhibitor that prevents germination in seeds,buds,and underground storage organs,allowing them to survive unfavorable environmental conditions.In contrast,Ethylene is often involved in breaking dormancy in certain seeds and buds.