Direct characteristic Answer:
Explanation:
The correct answer is "object complement", because it follows a direct object (in this case "the normally flat land") and renames it or states what it has become. It cannot be "predicative nominative" because "hilly" is not a noun, "direct object" here is "the normally flat land", and a predicate adjective follows a linking verb (for example, She is PRETTY.) So the only option left is "object complement".
In Dulce et Decorum Est, hags is used to describe young soldiers. The simile 'coughing like hags' was used because the young soldiers went into battle strong and full of life. After battle, they returned looking aged and beat down - hence 'hags' or resembling beggars.