Which sales role generally requires higher levels of education and prior sales experience in order to establish and maintain partnership relationships with a small number of accounts?

A) delivery sales representatives
B) key-account sellers
C) missionary salespeople
D) order-getter salespeople
E) order-taker salespeople

Key-account sellers typically require higher levels of education and prior sales experience because they are responsible for managing and nurturing relationships with a company's most important clients. This role often involves strategic planning and a deep understanding of the client's business needs, making it more complex and demanding than other sales roles.