In the sentence: "He ran up and down the stairs, his heart pounding with the effort." The phrase "his heart pounding with the effort" is

My dog sleeps beside my bed he wakes me up in the middle of the night to let him out. complete, run-on sentence or comma splice

We would like to work at the soup kitchen underline startsmore frequentlyunderline ends next year. which best identifies the degree of comparison of the underlined adjective or adverb?

4friends evenly divided up a nn-slice pizza. one of the friends, harris, ate 11 fewer slice than he received.