She is supporting an inference from the text. An inference is something that is implied, and the person saying they've "witnessed much fighting" infers that they're old, whereas "I am wounded with iron" can be taken to mean he's been wounded by a weapon like a sword.
Answer:
#9 - aplomb
#10 - Memorable (maybe eloquent, but the the use of 'simple' in the description basically contradicts the idea of its eloquence)
#11 - nadir
#12 - gyrate
Explanation:
definitions:
Aplomb: self-confidence or assurance, poise. memorable is self-explanatory. nadir: the lowest point; point of greatest adversity or despair.
gyrate: To move in a spiral or spirallike course.