. If I buy a book for $10 then the opportunity cost is:

answer; the correct answer should be (demonstrations); good luck

answer; intensive use of a sales force and is relatively costly;

answer; /// multipotentialite means a person who have many different interests and creative pursuits in life; (one true calling);

polymath; means a person   of wide-ranging knowledge or learning;

scanner; means; a device that captures images from photographic prints,posters,magazine pages.ect;

answer blank(1).(2); sharpe;