Select the sentence that correctly uses the commas in a nonrestrictive phrase

U.s. history 1.documentary analysis what steps did taylor’s family take to prepare her freedom

How do corporate finances, investor expectations and external forces influence stock prices and possibly pose a risk to investors

Which is relatively better: a score of 76 on a psychology test or a score of 22 on an economics test? scores on the psychology test have a mean of 90 and a standard deviation of 13. scores on the economics test have a mean of 52 and a standard deviation of 10.