Passage Summary: The author argues that because most 17-year-olds have finished growing physically, they are mature enough to be treated as full adults by society.

Conclusion: Seventeen-year-olds should be granted all the legal rights and privileges of adulthood.

Reasoning: Adult privileges should be given to those mature enough for the responsibilities, and science indicates that most people are physically developed by age seventeen.

Analysis: The editorialist is guilty of an equivocation flaw, using the word 'mature' in two very different ways. The first premise refers to maturity in a social or emotional sense—being ready for responsibility—while the evidence provided is strictly about physiological or 'body' maturity. Anyone who has met a teenager knows that a fully grown body does not necessarily come equipped with a fully functioning sense of adult responsibility. The argument fails because it assumes that physical completion is the same thing as the mental or emotional maturity required for adulthood. Look for an answer that highlights this disconnect between physical growth and social readiness.