The idea that is explicitly stated in the article is D. This year's flu season is going to be worse than usual
What is an Explicit Detail?
This refers to the use of words to show a claim that is clearly stated to avoid confusion or misrepresentations.
Hence, we can see that from the complete text, there is the narration of the bird flu and how it is costing the economy, and there is the explicit statement that this year's flu season is going to be worse than usual
Read more about explicit details here:
https://brainly.com/question/12862221
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