Dave is a sales executive at Windsor Stock. His tasks include finding the customers and prospects who would buy the company's products, locating them, and to pinpoint those who can influence purchase decisions. In this scenario, Dave is involved in:

territory analysis.

Explanation:

Dave is a sales executive at Windsor Stock. His tasks include finding the customers and prospects who would buy the company's products, locating them, and to pinpoint those who can influence purchase decisions. In this scenario, Dave is involved in territory analysis. Territory analysis is used by sales managers to make projections of annual sales goals, analyse the sales territory and decide on which account is worth following, allocation and division of sub territories to marketing executives.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."