Answer: It triggers new plant growth in these areas.
Explanation:
Auxin is a plant hormone that plays a crucial role in regulating plant growth and development.
Stems, buds, and root tips are responsible for the growth of the plant, and auxin helps regulate this growth.
Auxin promotes cell elongation and division, which is essential for the growth of these areas. By producing auxin in these regions, the plant can direct nutrients and resources towards these areas, allowing for more efficient growth.