Question

how can you check to see if you need to add a comma between two adjectives?
you can take one out to see if it makes sense.
you can see if it makes sense when you add and between the two adjectives.
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Explanation:

To determine if a comma is needed between two adjectives, we can use the "and" test (also known as the coordinate adjective test). If adding "and" between the two adjectives makes the sentence still make sense, then a comma is appropriate. Also, the "take one out" test can be used: if the sentence still makes sense when one adjective is removed, they are coordinate adjectives and a comma is needed. Both options describe valid methods, but the second option specifically mentions the "and" test which is a standard way to check for coordinate adjectives (where a comma is needed).

Answer:

B. You can see if it makes sense when you add AND between the two adjectives. (and also A. You can take one out to see if it makes sense. as both are valid methods, but typically the "and" test is a key way to identify coordinate adjectives requiring a comma. If we have to choose one as the most probable, the "and" test is a more direct test for comma - between - adjectives situation for coordinate adjectives. So the answer is B. You can see if it makes sense when you add AND between the two adjectives.)