Grace is a 15-year-old dancer and competitive track star who is concerned that all of the other girls in her glass have started puberty but she has not. The most likely cause for the delay in puberty is

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Quizplus · Accepted Answer

Puberty is triggered by the release of a hormone called leptin, which is produced by fat cells. In athletes, especially those who are involved in endurance sports, there is often a decrease in body fat percentage, which can delay the onset of puberty. Therefore, the most likely cause of Grace's delay in puberty is too little body fat to release enough leptin to trigger it.

Grace Is a 15-Year-Old Dancer and Competitive Track Star Who