Answer:
D: add a comma before the “and” before the last item.
Explanation:
Example:( I love to hike, Read, and go fishing)
When separating items in a list, it is highly important for a writer to Add a comma before the "and" before the last item.
This is a punctuation mark that marks a slight break two different parts of a sentence.
Now, when separating items in a list, it is recommended that one should:
Add a comma before the and and then
Before the last item in a group.
Therefore, the correct answer is option D.
Read more about commas here:
https://brainly.com/question/2224789