Which hormone can substitute for cold treatment in some plants?
Pick C: Gibberellic acid. Thinking through VERNALIZATION & FLOWERING step by step rules out the lookalikes and leaves Gibberellic acid. Skip these: A) Auxin; B) Cytokinin; D) Abscisic acid. For hormones and genes, match the molecule or gene to its real role, not a neighboring pathway.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.