The goal was to orbit a spacecraft around the Earth. It has people in it. So the answer is B.
Since the air is a great thermal isolator, the windows prevent heat exchange better than one made out of a single thick sheet of glass. The air between the thin blankets is not moving around and will form an isolating layer that acts exactly like another blanket, thus improving the thermal isolation
It’s called a branch point, represents where a single lineage evolved into a distinct new one.
The answer to this problem it C because the other answers don’t apply to this question.
