Please help with this first one will get 5 star and 20 points

The dynamics of a musical piece refer to the a. key signature b. composer’s history c. volume changes d. instrumentation

What characters are in marvel super heroes vs street fighter

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