According to the Grant Study, Jenna is most likely to be in her 40s when she was reevaluating and recording the facts about her adolescent and adulthood years.
Let understand that "Grant Study" is part of the Research work on Adult Development at Harvard Medical School.
The purpose of the Research was to explain the phenomenon concerning Adult Development.
Generally, the adolescent age ranges from age 10 to 19 while the adult middle age starts at age 40
Therefore, according to the Grant Study, Jenna is most likely to be in her 40s when she was reevaluating and recording the facts about her adolescent and adulthood years.
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