A survey conducted by a university that shows teens report feeling more anxiety than ever before. The last option.
Informational essays are essays written to pass information to a group of people or the public in general.
Such essays must be informational on the specific topic as much as possible and the information must be logical or factual and verifiable.
Researched informational essays are essays used to pass information on a particular topic based on research that has been conducted on the topic.
Thus, for a researched informational essay on teen stress, a survey conducted by a university that shows teens report feeling more anxiety than ever before would be quite relevant.
More on informational essays can be found here: https://brainly.com/question/11494346
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