More than anything, what saved Jamestown was the highly successful cultivation of tobacco, ________ Indian assistance with farming undoubtedly played a major part as well

A. although

B. in spite of  

C. nor  

D. neither

Mark the letter A, B, C, or Don your answer sheet to indicate the underlined part that needs correction in each of the following questions from 24 to 26. 

If you have some sufficient knowledge of English, you can make yourself understand almost everywhere. 

A. understand 

B. some 

C. almost 

D. of