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Answer:</h2>
2. The new recruit received an injury during the first day of training.
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Explanation:</h2>
In grammar, an <em>active voice</em> is a term used for sentences in which the subject is the one directly performing the action. For example,
<em>Joe killed the snake.</em>
In this sentence, the subject Joe performs the action described by the verb kill.
<em>Active voice pays attention to who performed an action</em>
A contrast to an <em>active voice</em> is a <em>passive voice</em>. In a <em>passive voice</em>, the subject is being acted upon by another object whether the object is defined or not. An example is;
<em>The snake was killed by Joe.</em>
Here, the thing (snake) acted (killed) upon is the subject of the sentence.
<em>Passive voice pays attention to what was acted upon</em>
1. The front door locked and had been broken by the thief.
This is a passive voice because the thing acted upon, which is<em> the front door</em>, is the subject of the sentence.
2. The new recruit received an injury during the first day of training.
This is an active voice because the subject, which is<em> the new recruit</em>, performs the action described by the verb <em>receives</em>.
3. The last piece of pumpkin pie was eaten by someone.
This is a passive voice because the thing acted upon, which is<em> the last piece of pumpkin</em>, is the subject of the sentence.
4. The history exam was rescheduled for next week.
This is a passive voice because the thing acted upon, which is <em>the history exam</em>, is the subject of the sentence.