A study of native born residents in an area of Adivasis found that two-third of the children developed considerable levels of the nearsightedness after starting school, while their illiterate parents and grandparents, who had no opportunity for formal schooling, showed no signs of this disability. If the above statements are true, which of the following conclusions is most strongly supported by them?
The passage correlates the onset of nearsightedness specifically with the start of school and formal education, contrasting this with the lack of disability in those who did not attend school. While (a) and (d) are too restrictive ("Only"), and (b) generalizes too much, (c) provides the most logical link between the activity (school work) and the result (nearsightedness) based on the context provided.
Correct Option: (c) The nearsightedness in the children is caused by the visual stress required by reading and other class work
