She feels betrayed and lonely.
Think of an equation:
200 - 91 = 109
You can do anything to this equation, as long as you do the same thing to both sides. So, if you add 91 to both sides, you will get:
200 = 200
Since this holds true, Susan's strategy to add her answer to 91 makes sense.
Answer:
I believe that The word 'Validate' in this sentence would mean to clarify what the first one is saying.
Explanation:
If you get results from the first "experiment" then the second experiment's results will clarify, or prove what the first experiments answer was
The answer is both A and B (C)