Mark the letter A, B, C, or D on your answer sheet to indicate the cor

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.    

Some research has shown that acupuncture might help with the ALLEVIATION of headaches and migraines. 

• A. A. eradication
• B. B. aggravation
• C. C. prevention
• D. D. reduction

alleviation = giảm nhẹ, giảm thiểu
eradication = loại bỏ, xóa bỏ
aggravation = làm trầm trọng hơn
prevention = ngăn cản
reduction = giảm thiểu
=> B