Answer: D. the salesman's contacts and clients
Step-by-step explanation:
This is a quote from the play ''Death of a Salesman'' by Arthur Miller in which Charley is trying to explain to Biff what a Salesman goes through when they try to engage in business.
He talks about how Willy had to sell himself to his contacts and clients and sometimes they would not smile back which was when the salesman would know that things might not work out.