Memorandums are important because Memos have a twofold purpose: they bring attention to problems and they solve problems. They accomplish their goals by informing the reader about new information like policy changes, price increases, or by persuading the reader to take an action, such as attend a meeting, or change a current production procedure.
The answer is C. In stores there are usually dressing rooms or you can physically see the product you are purchasing. When you are shopping at home you are taking a risk the the item will not be exactly what you want. With online shopping you do avoid crowds, can order anytime, and have a wider selection, but you cannot try out your product before you buy it.
This is a maths question.
George Milton
Lennie small