E In the I 960s, the greatest obstacle for those who wanted to organize women was said to be women’s conviction that they were actually inferior to men (introduction of topic women’s conviction that … in standalone sentence).
B This acceptance that men were the superior gender had not developed by chance (This
acceptance that … = women’s conviction that … ).
C It had been the view that had been socialised into them from the moment of their birth (It = This
acceptance = women’s conviction; them, their= women in Sentence 1).
D This will become clear if you look at any girls’ magazine or popular film of the period (This = that the view of women’s inferiority had been socialized into women from birth).
A There you will see how women are consistently portrayed as weak and in need of male protection
(There = any girls’ magazine or popular film of the period).