The correct answer to this open question is the following.
Although there are no options provided, we can say the following.
The IMC marketing material to close the sale was the personal selling tool, using persuasion, and highlighting the benefits of the service to close the sale.
We are talking about Integrated Marketing Communications that include different disciplines such as Public Relations, Promotions, Sales, or Advertising. These resources are used by companies to plan and implement programs aimed to offer their products and services and closing the sale, relying on good customer service. Most of the modern campaigns include IMC to support the marketing effort.