What is the best definition of an archetype?

a view of the world that reflects the writer’s cultural beliefs
a fairy or sprite with magical powers that the main character
a category of literature, such as a play, novel, or poem
a symbol or theme that appears in stories from many different cultures

I would go with the last one- a symbol or theme that appears in stories from many different cultures. An archetype is kind of like a blueprint which authors add onto, so they carry through several cultures and stories as well as myths and legends. 

Dr.king , i would take my mental flight by egypt and i would watch god’s children in their magnificent trek from the dark dungeons of egypt through, or rather across the red sea, through the wilderness on toward the promised land.his  speech"i  have a dream" to encourage people that change will come. this  speech  was very important during the civil rights movement and was a contributing factor in the end of racial injustice in society. the  intended audience  of "i  have a dream" is white people. i hope this