The boisterous children were practically bouncing off the walls by the end of the school day.

A- joyful
B- rowdy
C- obedient
D- impatient

B- rowdy

To determine the correct answer choice, we need to understand the meaning of the word "boisterous" and the context given in the sentence.

"Boisterous" means noisy, energetic, and full of life. It is often used to describe people, particularly children, who are loud, enthusiastic, and difficult to control.

In the given sentence, we are told that the children were "practically bouncing off the walls." This expression indicates that the children were extremely energetic and unable to stay still. This behavior aligns with the definition of "boisterous."

Now, let's analyze the answer choices:

A. joyful: While the children could have been joyful, the word "boisterous" suggests a more active and noisy behavior than just being joyful.

B. rowdy: This is a strong contender. "Rowdy" means noisy and disorderly, which matches the behavior described in the sentence.

C. obedient: This is the opposite of the behavior described in the sentence. "Obedient" means well-behaved and compliant, which does not align with the children bouncing off the walls.

D. impatient: Although the children may have been impatient for the school day to end, "impatient" does not capture the energetic and noisy behavior described in the sentence.

Considering the analysis above, the most suitable answer choice is B- rowdy.

B- rowdy