Apoplastic pathway involves movement of ions through:
Pick C: Cell walls and intercellular spaces. Thinking through MINERAL Transport step by step rules out the lookalikes and leaves Cell walls and intercellular spaces. Skip these: A) Cytoplasm; B) Plasmodesmata; D) Vacuoles. 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.