Answer:
- <em>C) The teacher assigned an essay in which students needed to have a strong thesis, to create a clear structure, and</em><u><em> </em></u><u><em>they </em></u><em>needed to make a logically progressive argument. </em>
The error is the use of <u><em>they</em></u> a second time.
Explanation:
To keep <em>parallel structure </em>in sentence you must use the same pattern of words after the conjuntions (for instance, and, or). Some of the parallelis that you must check is the use of the same kind of verbs:
- progressive with progressive
- infinitive with infinitive
- past with past
<em>A) Charlotte didn't know which habit she found the most annoying: smack</em><em><u>ing</u></em><em> gum, tapp</em><em><u>ing</u></em><em> pencils, send</em><em><u>ing </u></em><em>text messages, or sleep</em><em><u>ing</u></em><em> in class.</em>
In that sentence all the verbs use the form <em>ing, </em>thus the parallel structure is correct.
<em>B) The principal could never understand why teachers were</em><em><u> late</u></em><em>, </em><em><u>failed</u></em><em> to turn in their lesson plans, and yet still </em><em><u>complained</u></em><em> incessantly all day long.</em>
All the verbs are in past tense. Thus, this is a correct parallel structre.
<em>C) The teacher assigned an essay in which students needed to have a strong thesis, to create a clear structure, and</em><em><u> they </u></em><em>needed to make a logically progressive argument.</em>
Although, the verb forms are correct, in parallel structures you do not repeat the pronoun. Thus this form is<u> not a correct parallel structure</u>.
The error is repeating the pronoun <u><em>they.</em></u>
<em>D) Each day at work at the ice cream shop, Ben needed to </em><em><u>check</u></em><em> the inventory of ice cream, </em><em><u>insure </u></em><em>that all the workers showed up on time, and </em><em><u>modify</u></em><em> the menu board's offerings. </em>
All the verbs have the same form. This is a correct parallel structure.
