The mask wearer thus becomes a sort of medium that allows for a dialogue between the community and the spirits (usually those of the dead or nature-related spirits). Masked dances are a part of most traditional African ceremonies related to weddings, funerals, initiation rites, and so on
I'm sorry i do not know the answer, but in the picture you took i noticed how it said hint try clicking on that and I also noticed it said chapter 2 at the top of the page if that is a reading source that has information i would read through that or put a link to that so we can read it and see if it helps us get the most accurate answer.
Fracture is the tendency of a mineral to break along curved surfaces and non-straight surfaces. Cleavage is when it breaks into flat pieces.
Hope this helped!