Which step in the problem-solving process is practiced when considering whether it is cost effective to add a salad bar to a school lunch menu:

The answer is "weigh advantages and disadvantages".

Explanation:

Whenever you are analyzing any problem, it is important to consider what are advantages and disadvantages to make any changes to a particular situation. As in the given question when you are going to consider whether it is cost effective to add a salad bar to a school lunch menu or not, you should weigh advantages and disadvantages of that. By using this step , you will get better option.

the first one is d and the second a

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