Buying an existing business a. is beneficial because an established business always has a good reputation b. is not recommended because there are too many disadvantages c. allows the owner to build upon the goodwill of previous customers d. is a high risk because successful businesses are usually not sold

A: There is no truth in the statement that an established business has a god reputation. That is not a given and there are countless reasons why that could be false.

B: There are numerous disadvantages to owning a business whether you started it yourself or you are buying an existing one. 

C: While a pre-existing customer base is often a good thing, there is also a good chance that with a change of ownership any trust or faith in the business is lost given the new owner is a stranger.

D: Often times a business is sold because the owner(s) can no longer handle it. It is also possible that they are selling to cut their losses. It is rare that a business doing well would be sold. Change in ownership is certainly possible with a successful business but being completely sold is unlikely unless they are being bought out completely which is often the case when larger companies wish to acquire a particular product another company produces.

While an argument could be made for most of these choices the most logical answer is D.