Read the following advertisement and mark the letter A, B, C or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 1 to 6.

Dirty body - healthy body

Do you like to be clean? An (1)______thinks it could be making you sick. "Bathing removes our natural protection (2)______germs," said Dr. Giancarlo Pagnozzi. "Nature gives us protection, but we keep (3)_______it away."

For seven years, researchers studied 300 people. One half (4)______a bath or shower every day using soap. The other half washed once a week in plain water. The super-clean team had several minor illnesses, (5)_______876 colds, 167 cases of flu, 49 sore throats, and (6) ______skin diseases. The dirty group had only 29 colds, 3 cases of mild flu, and 1 sore throat - but no friends.