Please help. question and answer and in photo shown​

How did emperor justinian’s review of roman laws create a more efficient legal system? a.he got rid of outdated and repetitive laws.b.he ranked the laws according to importance.c.he created new laws to address modern situations.d.he combined minor laws into stricter categories.ill mark brainliest

After the attacks of september 11, 2001, the united states demanded that

In an industry in which there are several providers of a type of good, why can one business not charge much higher prices for their goods?