Whereas everything here is very important to a short story, and a combination of those would be perfect, I'd say that for such a story 'plot' is the most important element. Because you need an interesting story, and you need to explain how they are going to escape the jail.
The sentence - The children were given a doll's house by Mrs. Hay - is written in the passive voice. The correct answer is B.
The active voice would be - Mrs. Hay gave the children a doll's house.
It is a thesis statement since it Summarizes the point of realization he experienced during his internship where he wanted to be, A Newspaper Author/Publisher (you didn’t complete the statement)
subordinate or dependent clause
The quality of being sage, wise, or able to make good decisions.
