C. Are vascular is the answer
C because you are reflecting, like the translation in math.
Regular processing time for a replacement citizenship certificate application takes 6 months. However, if you can prove that you need your certificate urgently, either to travel or to keep or get a job that requires proof of citizenship, you may be able to apply for an urgent citizenship certificate.
Explanation:
The DNA contains many regulatory sequences that are very important, even though they do not code for proteins.
For example, the expression of every gene is regulated by a region called the Promoter. The promoter sequence, located close by the coding region of the gene, usually binds the RNA polymerase (the enzyme that transcribes genes into mRNA) as well as other proteins necessary for transcription,
The promoter sequence, thus, does not itself code for proteins, but is essential for transcription and must be highly conserved so that the RNA polymerase can find it.