-- To support the argument for incentive program means- the program should be able to sell more cars as well as with some profits to the manufacturer. If this is justified, then that should be the correct answer choice.A. The amount of discount generally offered by manufacturers to dealers is
carefully calculated to represent the minimum needed to draw consumers'
attention to the product.
-- Since this answer choice exactly says - discount offered is carefully calculated to attract customers. It means it results in more sell with some profit to the manufacturer. Thus A supports the incentive program and should be a correct answer choice.B. For many consumer products, the period of advertising discounted prices to
consumers is about a week, which is not sufficiently long for consumers to
become used to the sale price.
-- Irrelevant, hence not a correct answer choice.C. More prestigious auto makers do not use incentive programs because they
dilute the company's brand name.
-- Irrelevant, hence C not a correct answer choice.D. During such a promotion, retailers tend to accumulate in their warehouses
inventory bought at discount; they then sell much of it later at their regular
price.
-- This is an opposite answer. It is going exactly opposite to the incentive program. Thus though the sales will increase, profitability for the manufacturers will get hurt. Hence D cannot be a correct answer choice.E. If a manufacturer fails to offer such promotion but its competitor offers them,
that competitor will tend to attract consumers away from the manufacturer's
product.
-- This is a new information and taking us away from the main argument of incentive program. Hence E cannot be a correct answer choice.I hope this helps. Thank You.
Thanks,
Akhil M.Parekh