Here Is the Answer:
"Rowdy."
Step-by-step explanation:
The word that best matches "boisterous" is "rowdy." The sentence describes children who are extremely lively and noisy, likely due to their excitement and energy at the end of the school day. "Joyful" and "impatient" do not fully capture the wild or disruptive behavior being exhibited, and "obedient" is the opposite of what is being described. Therefore, "rowdy" is the best word choice to convey the proper tone and meaning of the sentence.