Question

insert one comma to separate the coordinate adjectives.
,
the bright resilient sunflower, the state flower of kansas, is a drought - tolerant plant that serves as the preferred food source for a variety of creatures.
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Explanation:

Coordinate adjectives are adjectives that modify the same noun and can be separated by a comma (and their order can be reversed). In the sentence, "bright" and "resilient" both modify "sunflower" and are coordinate adjectives. So we insert a comma between them.

Answer:

The bright, resilient sunflower, the state flower of Kansas, is a drought - tolerant plant that serves as the preferred food source for a variety of creatures.