Problem One
It sure isn't D. That would be a positive reason for texting. This is an essay against texting. It may be true, but you want to hide it from prying eyes who might use it as an argument against your thesis.
I don't know how you could prove the second part of B. In any event the detail you need has to support the idea that you are endangering others. Your problem with germs doesn't affect me, especially through cyber space.
You could pick A, but the problem is the second part of the choice. You'd really have to work to show how that could happen although I suppose it is possible. If it can cause misunderstandings, then that would happen whether you were texting or having a friendly game of Badminton.
I think C is the better answer, but I'm not fully convinced it isn't A. That's the problem with multiple guess. Eventually it does break down to a guess sometimes.
Problem Two
You can get rid of A for certain. It may be true, but it has nothing to do with stiff necks and calloused thumbs.
Same comment applies to B.
I don't think you are really talking about limiting texting. You are talking about not changing your current habits. So C is marginally incorrect.
Pick D
