Answer:
Suppliers of pencil-making resources continue business due to mutual benefit. They gain income while providing materials for pencils. The desire for profit motivates them to meet demand. This trade sustains as each side gains, maintaining a cycle of supply and demand driven by economic incentives.
Step-by-step explanation:
Suppliers of pencil-making resources engage in business due to a mutually advantageous arrangement. By furnishing essential materials for pencil production, they generate revenue. The pursuit of profit acts as a driving force compelling them to fulfill market needs.