The answer is B because it says he does all these things almost blind. It's really hard to see when your eyes are still in sleep mode but if you have a routine you constantly follow then after awhile it becomes a habit or another way to say it is that it becomes second nature to you like breathing. (If you don't know what second nature means just look up the definition, and you don't even need to read the full definition to understand it)
I'm not sure but here's the definition of Parallel Structure. ( Using the same pattern of words to show that two or more ideas have the same level of importance). You can go with either the first or second sentence that's my opinion but I'm really not 100% sure. Sorry I couldn't been more helpful. I tried
