Which of the following principles do NOT prevent communicable diseases?

Using a handkerchief while sneezing or coughing.

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Washing personal articles of an infected person separately.

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Eating a lot of green leafy vegetables.

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Drinking clean and safe water.,

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Solution

The correct option is C
Eating a lot of green leafy vegetables.

Principles that prevent communicable diseases are drinking clean and safe water, eating freshly prepared and properly stored food, using a handkerchief while sneezing or coughing, proper disposal of waste, not allowing water to stagnate and undertaking timely vaccinations.
Eating green leafy vegetables does not prevent communicable diseases, it will help prevent some non-communicable diseases.

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