B. <span>a long historical account of how the device is used</span>
I think because he has very little energy remaining and has been out in the cold for too long.
Sentence 3 supports the main idea of the passage the least because it doesn’t even mention anything about the women in their family, it definitely talks about women and their active ness in politics, but it doesn’t have anything to do with the women in their family whereas all the other sentences do.
Hope this helps!
The answer is B since because it is combining two sentences together