I for one do not see a problem with the test. Sorry.
a. misfortune b. sorrow
1. He believed that the greatest of his
misfortune was that he'd never had a college education.
Sorrows are feelings quantified as being deep, not great. a. fault b. guilt
2. The traffic police were searching for evidence to prove the accused man's
fault, but in vain.
You can prove someone is at fault or show proof that someone is guilty, but you cannot prove someone's guilt--an internal feeling. a. personalities b. qualities
3. The fact that they reacted so differently was a reflection of their different
personalities.
Reactions relate to behavior; qualities relate to attributes.
All the best,