The manufacturers and products would likely spend more on personal selling than on nonpersonal selling is: C. boeing, 737 jetlines.
Personal selling can be defined as the way in which a salesperson or a marketer tend to convince a customer to buy their product using face to face interaction. Most salesperson tend to engages in this marketing technique by making use of spoken words that will help convince the customers to buy their products.
Boeing, 737 jetlines will tend to spend more on personal selling than non personal selling based on the fact that personal selling will help to bring in more customers to book and use their flight.
Therefore the correct option is C.
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