You will go to see a doctor because your finger A.cut B.cutted C.is cut D.is cutted

You will go to see a doctor because your finger A.cut B.cutted C.is cut D.is cutted
You will go to see a doctor because your finger A.cut B.cutted C.is cut D.is cutted

You will go to see a doctor because your finger A.cut B.cutted C.is cut D.is cutted
D.is cutted

is cutted,
被动语态，手指头被切了，不是手指头切了别的。
再问。

C. is cut。 because后面接个从句，是个完整的句子，成分要完整，所以要be动词，cut过去式是cut

Because后加句子，这里应该用被动语态，又cut的过去分词是cut,所以用is cut,选C。句意是你将去看医生应为你的医生因为你的手指被切了