Ecological metaphors are used to help develop authors ideas to communicate them to public
<span>A.
Half the students were failing the course near the end of the school year.
The sentence is written in passive voice because the course is the subject of the sentence and was being failed is the main verb phrase. The course can't fail. The students are the ones who are failing so to change it you must make the students the subject of the sentence. A is the only option that makes the students the subject.
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Can I see the sentence choices
D, because the other three are very wide topics but you can explicitly discuss the effects and cause of MLK's bus boycott <span />