Passage Summary: Because perfect pitch seems to run in families, researchers have concluded that it is a trait you inherit through your DNA.

Conclusion: The ability to identify musical pitches is determined by a person's genetic makeup.

Reasoning: Statistical data shows that individuals with perfect pitch are significantly more likely to have relatives with the same ability compared to those who lack it.

Analysis: The argument relies on a correlation-to-causation leap, assuming that because the trait clusters in families, the cause must be biological. To strengthen this, we should look for an answer that helps rule out environmental factors, such as being raised in a musical household. If we find evidence that the trait persists regardless of upbringing, the genetic explanation becomes much more robust.