Showing rather than telling improves <span>the coherence of an essay. When visual images are incorporated with audio explanation, it is easier for the receiver of the message to understand the plot of the message. This is because visual aids provide the opportunity to give the receiver the chance to exactly visualize what is being said in the essay.</span>
In the excerpt, the word "pungent" refers to the pickles' aroma.
Pungent is a word to describe a very strong smell, very sharp and biting. So when Untermeyer used the word pungent to refer to the pickles, he was talking about their aroma, which is a fancy way to say smell.
A pronoun shift is when you modify the pronoun in the same sentence, then the reader is not able to understand who is the subject of the sentence.
In the exemplified sentence the pronoun inserted incorrectly is <u>they</u>, shifting the initially singular subject "The student" (pronouns he or she) to a plural pronominal form.
When correcting, the writer must evaluate which is the desired pronoun, that fits his subject.:
<em>(Singular form) If the student feels ill, he/she should be sent to the nurse.
</em>
<em>(Plural form) If the students feel ill, they should be sent to the nurse.</em>
So, the pronoun shift that should be circled is They
