thereby 和 AND THEREBY

thereby 和 AND THEREBY
Unlike the original National Museum of Science and Technology in Italy,where the models are encased in glass or operated only by staff members,the Virtual Leonardo Project,an online version of the museum,encourages visitors to “touch” each exhibit,which thereby activates the animated functions of the piece.
A.exhibit,which thereby activates
B.exhibit,in turn an activation of
C.exhibit,and it will activate
D.exhibit and thereby activate
E.exhibit which,as a result,activates
这个是道改错.题目中exhibit,which thereby activates是需要改的地方,.他的答案是选D.但是据我的语法知识来讲的话.THEREBY后面只能接动名词啊.为什么这里又可以接动词原形