Answer:
Use Auxin at the base cutting
Step-by-step explanation:
Auxin is a growth hormone which is used in the cutting process to promote cell elongation.
It also assists in phototropism and allows plant to photosynthesize in larger extent so that it can make food from light.
For assisting in phototropism, it elongates the cell of a plant stem on its darker side so that it can bend easily towards the source of light.