Answer:
- Adolescents; adults; with peers.
Explanation:
As per the given descriptions, the experiments revealed that 'the adolescents were more likely to display a tendency to take risks and crash when they were with peers contrary to the adults.' This shows that how peers influence the adolescents in their decision-making and elevates the tendency to take risky decisions while the adults are more likely to offend alone. The presence of peers propose a 'reward-sensitive motivational state' that stimulates the adolescents to take these short-term beneficial risks and going for immediate rewards instead of going for a safe long-term alternative.