In both inference and observation, you have to monitor or observe something.
Here's one example, you can build on it:
Sherlock Holmes 'observed' the scene below him.
His 'inference' was based on the evidences given to him.
Here's the definition of both of them...
the action or process of closely observing or monitoring something or someone is called observation.
a conclusion reached on the basis of evidence and reasoning is inference.
Answer:
C. Searched
Explanation:
"Patiently" discludes any non-methodical search.
"Searched" is the only neutral term.
Answer:
A. People assumed reading was difficult for her.
Explanation:
People wouldn't expect much from her if they thought she was uneducated, as they probably do if they assume reading is difficult for her.
The correct answer is B. 1998
You don't need to be so precise and say the month or the date because there's not that high of a chance that something would change in a newer edition from the same year.