Final answer:
A salesperson may work for as many builders as their license permits, which is based on the regulations and agreements pertinent to their area of operation.
Step-by-step explanation:
A salesperson may work for as many builders as they are licensed. The real estate industry and regulatory bodies often set the rules governing the licensing and employment of salespersons. Therefore, a salesperson's ability to represent multiple builders or manufacturers usually depends on the specific licensing regulations in their area of work, as well as any contractual agreements they may have with those builders.