A licensed real estate salesperson is primarily responsible to:

This option incorrectly assumes a salesperson's primary responsibility is always to the seller. While sellers are often clients, the question doesn't specify this is a seller's agency situation, and in buyer agency situations, responsibility shifts to the buyer.

This confuses payment relationship with agency relationship. While brokers typically pay salespeople from commission, the fiduciary duty is to the client, not the source of payment.

This confuses employment relationship with agency relationship. While salespeople work under brokers, their primary responsibility is to their client, not their employer.