Ralph Henry is an outside order getter. Last week Ralph made a sales call on Sally Duncan, and today He was making a follow$-$up sales presentation to Sally. After he explained his companys recommendations, he asked, "Based on what you have seen so far, do you think our ideas could be a viable solution for your problem?" Sally looked down and did not reply. What should Ralph do$?$ a$.$ Remind the prospect of the benefits Ralph is offering. b$.$ Do not say anything; be quiet and wait for the prospect to answer the question. c$.$ Offer to reduce the price if the prospect will buy today. d$.$ Remind the prospect of how long Ralph's company has been in business.