I say C is the correct answer.
Let x be the number of games they lost.
They won four games more than they lost, meaning they won 4+x games.
Games won + Games lost = Total games.
(4+x) + x = 18
4 + 2x = 18
2 + x = 9
x = 7
They lost 7 games, won 11 games.
Check : 7+11 = 18.
D is the only adverb. A and C are adjectives and B is a noun
The correct answer is "a long narrative poem focused on heroic action and national in scope".
An example of such epics would be Edmund Spencer's Fairy Queen, or Geoffrey Chaucer's Canterbury Tales.