Respuesta :
b. he instituted social changes the imroved lives for roman cictizens throughout the empire
I believe the answer is: b. he instituted social changes the improved lives for roman citizens throughout the empire
During his reign, justinian introduced the code of justinian, which is a constitution that regulates the method on how people could be involved in the government through government representatives. This method improved the lives of many citizens and still used as a basic structure for modern government system.