How to make a bedroom theme about ribbon dancing?

Which sentence contains a comma splice? marco rode to school on his bicycle this morning, he arrived an hour early.marco, who enjoys riding his bicycle to school, arrived just before the bell today.marco rode to school on his bicycle on monday, tuesday, and wednesday.marco, who rode to school on his bicycle this morning, arrived an hour early.mark this and returnsave and exit

This is a type of government in which a group of individual states are united under astrong, central government.

What is the most famous racetrack in america?