The sentence that state the key idea or main idea of the article is:".Tenayuca worked to improve the lives of Mexican American workers." (Option D)
<h3>What is a main idea or central idea?</h3>
The idea around which other ideas revolve is called the main or central idea.
It is to be noted that Emma Tenayuca was a Fearless Mexican American labor activist. Because she helped to improve the lives of Mexican American workers, she was nicknamed "La Pasionaria de Texas"
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