阅读下面短文，掌握其大意，从每题所给的a、b、c、d四个选项中，选出最佳选项。
a study has showed that the brain makes decisions about 10 seconds before a person realizes it.
experts involved in the study said that looking at brain activity while making a decision, they could predict the choices the subjects would make, before they realized that they had made a decision. lead researcher john-dyla
