Cabuliwallah initially wins minis friendship by giving her diamonds and raisins when Mini is still 5 years old. They bond became tight and the became close to each other. Mini's mother and father did not expect this to happen because the initial impression of Mini to Cabuliwallah is not good.
Answer:
B. These areas are necessary for a successful life.
In order to find theme look for what the story is trying to teach you. You could also look for the life story the author included.
This part of the thesis would be considered the topic, more specifically it would be considered the <em>introduction of the topic to study</em> since the thesis revolves around, I assume, Isaac Newton and you are offering a brief 'summary' of his life and accomplishments.
However if the reason to mention Sir Isaac Newton is to support an idea or a statement this could be considered a subtopic. It is subjective and directly related to the field of study you're doing the thesis for.
Hope this helps!