I would say the second option - "She skipped off, singing"
It gives a visual of her being very happy, instead of just saying she was happy.
Your answer is True! In Animal Farm the animals come together and make a law that all animals are equal and no animal is better than anyone else. Similarly in "Harrison Bergeron" all civilians wear "bands" that create equality by producing brain waves that made everyone at the same level of intelligence.
If we look at the part of the sentence "when a football practice was over" we can say that it is a recurring action periodically and it represents a routine, but that's not a phrase because it is stated specifically, what is the issue. "I stopped" also suggests a concrete action, therefore, it's not a phrase, because it explicitly indicates what has been done. What is the phrase in this sentence is a cluster of words without a finite verb, and having that in mind, the correct answer is "riding a skateboard".
Answer:
someone help this guy ASAP