C. Skin
Because it's the outer layer of your body that protects everything
Short term goals help make up the framework for long-term goals
Answer: "containing two acetyl groups"
Explanation:
Technically, all of these can cause double vision and other vision problems.
I'm not really sure what "less responsive" indicates, because it can mean a broad spectrum of symptoms. However, I would answer this with alcohol because it causes your eye muscles to weaken and can include symptoms like involuntary twitching.
Sorry I couldn't provide you with a definite answer, but I hope I was able to help :)