Answer:
a. state of
Step-by-step explanation:
The suffix that completes the word urgency is -ency. It comes originally from the Latin form -entia. This suffix is equivalent to the suffix -ence and it means "quality or state of".
If the question you posted admits more than one answer as correct, I would recommend you choose both options A and D - state of and quality, respectively.
If not, I'd recommend choosing the first option A due to the fact that "urgency" is a noun, and a quality is usually expressed by adjectives.