What does it mean to add -er to the end of a word?

gilgamesh is an epic hero from birth, as he's brought to the world by the hand of several gods who shaped him with the goal of saving humanity. there's a passage from the text that reads "the glorious sun shamash bestowed upon him glory; adad the terrible god of storms bestowed upon him courage. the great gods perfected his magnificence beyond all others, terrible like the great wild bull". this is a great example that show some of the super-human qualities that the gods gave gilgamesh upon his birth.

as gilgamesh grows he has to face many challenges that put his heroism to task. the courage he displays along the way, prove that he's ready to live up to the godly qualities brought upon him. at one point he has to overcome a wild beast by the name of hubamba "whose roar is a flood, whose mouth is fire, whose breath is death", as the text reads. the actions taken by gilgamesh, beating the beast with the use of his super-human force, examplify why he shoud be thought of as an epic hero.

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anyone who was dealing with communism in soviet union in his time had an ideal picture of equality, freedom, the struggle of the working class for a better future, the success of the aristocracy's overthrow and the emancipation of subjugation.   however, anyone who would go to soviet union to see the functioning of the communist system, would be convinced that it was about sad people, about everyday bad life, about the brutal attitude of communist leaders, about ill obsession to completely exterminate every thought on aristocracy. thus, orwell wanted to show all the absurdity, the brutality of the system, the unbearable rule of suspicious morality, the ignorant people who try to play professionally.

the answers are: b. and e.