Answer :
An offer is "a promise to do something or to refrain from doing some specific thing". Thus, option (b) holds the correct answer.
In the context of business, an offer is a clear proposal of the terms of selling and buying specific products or services. The offer is equivalent to a promise that refers to the present contractual binding contract between parties under certain terms and conditions.
There are two primary types of an offer: a specific offer and a general offer. A specific offer is specifically created for one person while a general offer is developed for a group of people.
While the rest of the options do not pertain to the context of an offer.
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