Final answer:
The male-to-female ratio in substance abuse typically shows that males are more likely to misuse substances like anabolic steroids, especially in their 20s or 30s. The highest onset of substance abuse is likely observed in young adults, though the exact ratio and age range is not specified based on the information provided.
Step-by-step explanation:
The male-to-female ratio in substance abuse and the highest onset age of substance misuse are important pieces of information for understanding the demographic trends in drug use. While the specifics of steroid use indicate that males in their 20s or 30s, particularly weightlifters, are more likely to misuse substances like anabolic steroids, this information alone does not give a comprehensive picture of the relative rates of substance abuse between males and females overall, nor does it provide a clear indication of the highest onset age for substance abuse across all drugs. However, it does suggest that males are more likely to misuse steroids than females, and that young adults are at particular risk for substance misuse.
Based on the available information—although it does not directly answer the multiple-choice question as data on steroids specifically are not sufficient to generalize to all substances—it can be inferred that substance misuse is likely more prevalent in males compared to females and that young adults, which include those in the 18-29 age range, are at a heightened risk for such behaviors. Studies have associated early adulthood, particularly the early 20s, with risk-taking behaviors including substance use due to social, developmental, and biological factors.
Therefore, using the available data and general knowledge about substance abuse trends, an educated assumption can be made to support the option that indicates males are more likely to abuse substances than females and that the highest onset is likely during young adulthood.