Which of the following most logically completes the passage?

On the whole, scientists do their most creative work before age forty, a tendency that has been taken to show that aging carries with it a loss of creative capacity. An alternative explanation is that by age forty most scientists have worked in their field for fifteen or more years and that by then they have exhausted the opportunity for creative work in that field. Supporting this explanation is the finding that ______.

1. the average age of recipientsof scientific research grants is significantly greater than forty

2. a disproportionately large number of the scientists who produce highly creative work beyond age forty entered their field at an older age than is common B

3. many scientists temper their own expectations of what they can achieve in their research work by their belief that their creativity will decline as they age

4. scientists who are older than forty tend to find more satisfaction in other activities, such as teaching and mentoring, than they do in pursuing their own research

E there is a similar diminution of creativity with age in nonscientific fields, such as poetry and musical composition

排除法倒是能选出B，但是是什么意思？？？为啥是B？？？

太明显了，明显到根本不用看选项就知道答案会是这个意思了。题目要求支持的论点是：40岁的科学家已经在他们的领域中干了若干年，所以把创新的机会（RP？）用完鸟。B说一大群40岁以后出创新的科学家中按比例看更多的是比较晚进入研究领域的；潜台词就是他们的RP还没有用完。

明白？

got it

3x