Read the text and choose the appropriate answer.
Vitamins are complex compounds that the body requires to function normally. The word vitamin was coined in the 20th century, but the therapeutic value of certain foods in combating disease was recognized as early as 3000 years ago by the ancient Egyptians. They knew that night blindness could be treated by eating liver, a source of vitamin A. The food we eat must contain all vitamins as the lack of these or those can cause different diseases. You should keep it in mind!
Which of the following is true?
Vitamins are simple compounds.
Certain diseases can be caused by vitamin deficiencies.
The body doesn`t need all vitamins.
Liver contains a great amount of vitamin C.
The value of certain foods was discovered in this century.
