Hi, and same. :) Please give me Brainliest!
The answer is the third choice
It is DNA that contains the genetic code that is used to make proteins. In turn, it is the structure of proteins that determines many of the biological functions and physical characteristics of an organism. Genes are segments of DNA. ... During transcription, the two strands of DNA unwind.
It provides exercise to the body keeping it fit and calm. Hope this helps.