How does the hormone move down the stem of the plant ?? *please help*

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Vascular tissues are used to move hormones from one part of the plant to another; these include sieve tubes or phloem that move sugars from the leaves to the roots and flowers, and xylem that moves water and mineral solutes from the roots to the foliage.

Explanation:

i think the answer is b.

nucleus

would be most reasonable answer tbh