Identify the characteristics of vending machines and door-to-door retailing. expanded assortment, reduced margins, and more information. added convenience and higher than conventional margins, usually reduced assortment. expanded assortment and/or reduced margins and service. expanded assortment and service. expanded assortment and service, and more information.

Leticia has worked for 20 years in the public relations department of a large firm and has been the vice-president for the past ten years. it is unlikely she will ever be promoted to the top executive position in her firm even though she has directed several successful projects and is quite capable. her lack of promotion is an illustration of (a) the "glass ceiling" (b) the "glass elevator" (c) the "mommy track" (d) sexual harassment