Question 9 of 10

To strengthen loose teeth, in the Middle Ages it was recommended ...
A: Gnawing crackers
ERROR
Correct answer: In the Middle Ages, to strengthen loose teeth, dentists recommended tying a frog to the jaw.
B: Immerse your head in a bowl of goat's milk
ERROR
Correct answer: In the Middle Ages, to strengthen loose teeth, dentists recommended tying a frog to the jaw.
C: Tie a frog to the jaw
RIGHT
Explanation: In the Middle Ages, to strengthen loose teeth, dentists recommended tying a frog to the jaw.
D: Boxing
ERROR
Correct answer: In the Middle Ages, to strengthen loose teeth, dentists recommended tying a frog to the jaw.