Answer: "Quiero que la gente esté relajada."
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1) You probably went to write "la gente" (instead of "la genta").
2) You would use the verb: "estar".
3) You would you would use the third person (corresponding with "la gente", present subject tense, of "estar", which is, "esté".
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"Quiero que la gente esté relajada."