Long distance transport of mineral ions occurs through:
That points to C: Xylem. Compared with the other options, Xylem is the one that correctly describes the MINERAL Transport concept. The wrong ones are A) Phloem; B) Cortex; D) Cambium. If you’re stuck, eliminate anything that contradicts a basic fact you already know for this topic.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.