Final answer:
A comma should be placed after the introductory phrase 'I tripped over the slippery smooth steps' to improve sentence clarity, resulting in the sentence, 'I tripped over the slippery, smooth steps, leading to the playground.'
Step-by-step explanation:
The comma should be added in the sentence, "I tripped over the slippery smooth steps leading to the playground." To clarify the sentence structure, it's beneficial to separate the introductory phrase from the main clause. A comma after an introductory phrase helps the reader understand the sentence structure more clearly and prevents misreading. Therefore, the revised sentence should read: "I tripped over the slippery, smooth steps, leading to the playground."
Let's review some example sentences to better understand common comma usage: Sentence 1 - After I finally found my keys, I got to work just in time. Sentence 4 - Though Susan wasn't feeling well, she went to the store anyway and bought ice cream, pizza, and candy. Example 1 - To get a good grade, you must complete all of your assignments. In each example, the comma is placed after the introductory phrase and before the main clause of the sentence, as it sets the stage for the rest of the sentence and provides a pause that aids in understanding.