Answer:
The reader would know why Mrs. Copperfield is not very pleased to see Miss Betsey.
The reader would know why Mrs. Copperfield is worried about herself and her son.
Explanation:
When writing a narrative or story from the point of view of the person performing the action, the readers get to understand why they perform some actions because they can listen to what's going through their mind and its more expressive than using third person point of view.
Therefore, if the story was told from the point of view of Mrs. Copperfield, the story would be different because the reader would know why Mrs. Copperfield is not very pleased to see Miss Betsey.
The reader would know why Mrs. Copperfield is worried about herself and her son.
1 - Marlow, Kurtz, Brick maker
2 - Narrative writing style
B.) Garden
this is because "on" is one of many words that are commonly in prepositions. Then to find the object of the preposition, you have to ask yourself, "on {or insert whatever your word is here} what", because the object of your preposition is the subject of the preposition. :)
I hope that makes sense!