Mark the word(s) CLOSEST in meaning to the underlined word(s): The last week of classes is always very busy because students are taking exam

Question:

Mark the word(s) CLOSEST in meaning to the underlined word(s): The last week of classes is always very busy because students are taking examinations, making applications to the University, and extending their visas.

• 
  A.
  hectic
• 
  B.
  eccentric
• 
  C.
  fanatic
• 
  D.
  prolific