Answer:
the ability to understand and discriminate between relations
Explanation: In context, it says that he was "unaware of his sagacity".This leads us to believe that this definition is in the right context
Answer:
A subject is a person or thing that is being discussed, described, or dealt with.
A theme is the subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic.
Explanation:
Theme is there central idea of the story
Need more of a description to answer better.
The third option
It is because it shows a different for of the idea