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In which paragraph does the author..........
1 mention both pros and cons of risk-taking?
2 give an example of an individual's dangerous behaviour?
3 argue that teenage brains might provide evolutionary benefits?
4 explain that adolescents may take risks because they're not fully grown?
5 seem dismissive of a scientific theory?

A. A seventeen - year - old was stopped for driving at 182 kilometres per hour. He didn't argue or lose control. He thought the cops were right to stop him. After all, it wouldn't do if everyone drove that fast. But he claimed he'd been careful. He'd chosen an empty, straight motorway and had kept an eye on the road at all times. The police were unimpressed and charged him with reckless driving. Why did he do it? We know teenagers can be moody, disobedient and immature and are sometimes irresponsible. But why do they occasionally feel the need to take irrational, unnecessary risks?

B.Great thinkers have been grappling with this question for millennia. The Greak philosopher Aristotle argued that 'the young are heated by Nature'. In the early twentieth century, the pioneering American psychologist Granville Stanley Hall studied adolescents and concluded that their development replicates human evolution. In other words, the stormy, stressful period that teenagers go through is the equivalent of an early less civilised and sophisticated era of human society. This hypothesis has long been discounted, but could there be an evolutionary advantage to teenage behaviour?

C. A more recent theory views teenagers not as incomplete adults, but as sensitive, highly adaptable creatures whose brains are perfectly designed for moving from the safety of the child's home to a complex, dangerous world. This theory explains why adolescents rebel against authority and long for thrills. It can lead to risky behaviour like speeding, but it also allows teenagers to meet more people and face up to challenges. And those new friends and experiences help them to evolve, to cope with the problems of adulthood and to become healthier and more successful.

D.Brain - imaging technology has shown that human brains take longer to develop than we previously thought. From the age of twelve to twenty-five, our brains become faster, more mature and sophisticated, better at integrating memory and experience into our decisions. But it's not an easy process, so that might explain why teenagers are inconsistent and rebellious. They're still learning to use their brain's developing networks. Just as teens can be physically clumsy as their brains develop. So perhaps the kid drove too fast because his brain was still a work in progress.