Answer:
b. Then, just ahead, a deer and her baby, called a fawn, cautiously stepped right onto the trail in front of Jan and her mom
Step-by-step explanation:
The quotation from the answer choices below that demonstrates the use of commas with a nonessential element is option B.
This is because a nonessential clause or phrase means that it can be removed from a sentence without affecting the main idea of the sentence. Commas can be used to set apart nonessential elements.