The correct answer is B.
A character study is an in-depth analysis of a literary character, in this case Louisa Ellis. There is not much action within the story (thereby canceling out the 3 other options), but we learn about Louisa's everyday lifestyle, down to the last detail.
1: never got the full attention of the parents like the oldest did. 2: Always has to share the parents attention with a more mature older sibling and the baby of the family.3: Probably feels the frustration of not getting to do things the older sibling can, and probably doesn’t get the coddling and extra attention the baby demands.
Heres a definition I found
look for or discover a meaning that is hidden or implied rather than explicitly stated
