If the prefix sub- means “under,” what is the exact meaning of the word subscribe?

a. write under
b. look back
c. place back
d. drive under

The word "subscribe" comes from the Latin words "sub-" meaning under and "scribere" which means to write. Then it forms the Latin word "Subscribere". Therefore, the exact meaning of the word subscribe is "write under". The correct answer is option A. 

The correct answer is B. in the first sentence, the (') should be a (").