The answer among the choices is letter A. Sterols is a lipid that doesn't contain a glycerol backbone because it is mostly unsaturated. It can be commonly found on fungi, plants, and animals as an important organic molecule. I hope my answer helps you.
Your answer will be answer choice B. Nobody thinks exactly the same as you do and nobody has to think the same as you. We have differences and that’s okay, I hope that this helps you
B. Achieving something in a short period of time