Which of the following is the best example of a well-defined problem?
A) Larry is unhappy with his life.
B) Cassandra needs to think of a good subject for a painting.
C) Jennifer wants to quit smoking.
D) Oscar needs to choose a major for college.
Answer: C
Rationale: A well-defined problem is a problem that has a clear initial state and goal state. In contrasts, an ill-defined problem is a problem that may be lacking definition in one or more ways, such as an ambiguous initial state or a lack of familiar operators. Although it can be a difficult problem to solve, quitting smoking has a clear initial state (smoking), a clear goal state (not smoking), and several possible operators such as using nicotine gum or behavioral therapy. In contrast, the other problems listed have much more ambiguous goal states. For example, how does Oscar know when to make his decision on what to major in final, and how does he know if he has made a good decision or not?
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