Iconography, the science of identification, description, classification, and interpretation of symbols, themes, and subject matter in the visual arts. The term can also refer to the artist's use of this imagery in a particular work.
I would say the leather bag, only for the reasons you can read a lot about them making items like that in history books.
I believe it is because they demonstrate the emotion.
The answer would be B. E string
Wait do you mean anything out of a lego set? like i could have absolutely anything but it would be made out of legos?