Not too sure, but I think it’s the last option: This is a complex sentence because it joins an independent clause with a dependent clause
By dressing like the grandmother and trying to impersonate her.
I would say C, Definitions - because dictionaries are used to see what the words mean in usually a brief explanation and there is no history or language origins (some specific ones may but not ALL DICTIONARIES)
A long exposition differs from a typical stage direction because a stage direction is usually brief. An exposition, however, goes into more detail. A stage direction also just usually tells the setting or where or what the character is doing, or how the stage looks. An exposition shows history and goes full out on the setting.
