Karen dodd is employed by dell and responsible for calling on primary schools in her home state of maine to promote the company's offerings. she demonstrates the dell line of products including desktop computers, laptops, and tablets and fields questions from teachers and administrators alike. this is an example of which promotion tool?

Karen dodd is doing Direct Selling.

Direct Selling is a process in which the products are shown and sold to consumers in a non retail environment.

In this scenario, Karen is responsible for calling on primary schools and directly showing them their product line and range. So she is directly targeting the audience. She is making a potential selling in a non retail environment.

Teachers and administrators don't need to go out to the outlet to purchase dell products if they require in their schools. Rather dell representative is directly approaching them at their own facility.

answer; by looking at total product,marginal product,and changes in both after changes in inputs