The most likely meaning of the acronym W.H.O is:
This refers to the use of abbreviations which are used to shorten the name of something, usually using the first letters of each word.
With this in mind, we can see that the most likely answer to the incomplete question is that the acronym W.H.O is World Health Organization which is responsible for the health of people in various countries.
Please note that your question is incomplete so I gave you a general overview to help you get a better understanding of the concept
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