I believe this is called CTAATGT. Hope this helps.
I think the answer is c but I looked it up and got this: system or thing used as an example to follow or imitate.
1- they can be used as domestic fuel for cooking instead of kerosene or firewood that contribute to pollution
2-they can also used to generate electricity in rural areas as these areas has not enough resources of electricity
I guess its DNA. DNA is the information code of the cell