What does the author imply about the effects of fortification (iodization) of salt in the town in northern India? Use evidence from the text to support your answer.

Which of the following defines scoliosis? a. a posture disorder characterized by the shoulders being rounded and the back hunched b. a posture disorder in which the spine curves up the back like a snake c. a posture disorder characterized by excessive curvature or arch in the lower back d. none of the above