Answer:
Correct answer is C the adoption of a strict moral legal code.
Explanation:
A is not correct because Roman empire had to pay a large amounts of money to maintain the costs of administration and army, and this was especially problematic after they were not able to conquer new territories.
B is not correct as this conflicts were destroying Roman Empire from the inside, especially in the 3rd Century. It brought political and economical decline.
C is correct as this laws were created to prevent the decline of Empire, but it was too late. Diocletian was the one who started this reforms.
D is not correct as they used mercenaries from Germanic tribes, who at the end destroyed the Empire.
Something that is done disrespectfully without any shame would be with impunity. Hope that helps you.
