Why did romans create a written code of law?
to confuse their enemies and block invasions
to allow citizens to see and understand the law
to spread literature throughout the republic
to serve as the basis for a new religion

The main reason for them creating a written code of law was because they had a huge empire and maintaining such an empire required a unified law that could be applied to everyone and every case. 

The correct answer in this case would be so that their citizens would be able to see and understand it. This allowed them to familiarize themselves with the law and abide by it if they desired to do so. 

If this is a true or false question i would say true