I belief this is the answer
B. The sets will have to be designed before they can be made
-Agarvated
The answer is C that's the only one that makes sense and the context clues help with the meaning
Hi!
Since snails go really slowly, and it says "SLOWING my thoughts...", we can interpret that he/she isn't thinking of things very fast. Our brains can think things so fast, normally we don't even have to think about it. (Wow, how many times can I say 'think' in one sentence?) But he/she is having that process slowed, probably because he/she can only focus on how cold he/she is.
Hope this helps!