47 According to the passage, why is it impossible to settle the nature and nurture controversy?
(A) Because researchers don’t have enough funding to conduct research.
(B) Because most of the researchers have their own biases.
(C) Because most of the researchers believe that a baby is born without a personality.
(D) Because researchers can’t keep people in a lab and observe them grow.

47 According to the passage, why is it impossible to settle the nature and nurture controversy?

47.根據這段話，為什麼不可能解決自然和養育之爭？

(A) Because researchers don’t have enough funding to conduct research.因為研究人員沒有足夠的資金進行研究。

(B) Because most of the researchers have their own biases.因為大多數研究人員都有自己的偏見。
(C) Because most of the researchers believe that a baby is born without a personality.因為大多數研究人員認為嬰兒出生時沒有個性。
(D) Because researchers can’t keep people in a lab and observe them grow. 因為研究人員無法讓人們留在實驗室裡並觀察他們的成長。

There’s just no way to put people in a laboratory and watch them develop. For this reason, there’s no scientific way to settle the nature-nurture controversy.