Someone help ? I need to get this right

Suppose you need to verify how correctly use commas you open ur english textbook and scan the chaper titles in which one would most likey find the information you need

What human capital are students acquiring when they take a robotics , an honors class divided into teams for tool acquisition , design , and public relations?

Which sentence contains a participial phrase that is placed correctly? -jose paid for a hamburger scanning the cafeteria for an empty seat -peeling off her winter jacket, sierra settled into the cozy armchair. -made of soft wool, nadia pulled on a blue sweater -the cowboy jumped from the horse laughing in the face of danger