Correct option is D
According to the given statements,
Conclusion I: "A cook can expect better payment for the delicious food he prepared."
This conclusion doesn't directly follow from the statement, which is about health, not payment.
Conclusion II: "One who visits hotels regularly does not require to go to the doctors."
This conclusion is irrelevant, as the statement doesn't mention visiting hotels.
Conclusion III: "It is better to keep good health by taking good food, than to visit a hospital."
This conclusion logically follows from the statement, as it reflects the idea of staying healthy through good nutrition rather than needing medical care.
Conclusion IV: "Cooks are poorly paid than the doctors."
The statement doesn't compare the actual payment of cooks and doctors, so this conclusion doesn't follow.
Thus, the correct answer is: (d) Only conclusion III follows.