A. Propaganda is
a memorial, a lasting remembrance, evidence.
b. something created to deliberately convince or influence people's thoughts, opinions, and/or actions.
the art of using symbols, or having symbolic meaning.
d. a recurring element in a work of art that provides an effect mode of social protest.
C.

b. something created to deliberately convince or influence people's thoughts, opinions, and/or actions.

Explanation:

propaganda is used to sway public opinion in their favor, this is why it's common to see propaganda during times of war.

based on the images pictured above, the major difference between the two cathedrals: the cathedral of notre dame and the amiens cathedral, is that the cathedral of notre dame emphasizes the horizontal lines while the amiens cathedral emphasizes the vertical lines.