Which word from the paragraph best the reader understand the meaning of the underlined word?

natalie mixed blue food coloring into the vanilla frosting. the diffusion of color was immediate. at first it was a light blue. but as she added more coloring, the spread of blue became darker in the frosting. it looked great on the giant cookie.

a.
frosting

b.
spread

c.
cookie

d.
coloring

the underlined word is diffusion.

Read the excerpt from infinite jest 'my application's not bought," i am telling them, calling into the darkness of the red cave that opens out before closed eyes. 'tam not just a boy who plays tennis. i have an intricate history. experiences and feelings. i'm complex. "read,' i say. 'i study and read. i bet i've read everything you've read. don't think i haven't. i consume libraries. i wear out spines and rom-drives. i do things like get in a taxi and say, "the library, and step on it." my instincts concerning syntax and mechanics are better than your own, i can tell, with due respect. the theme suggested by the excerpt is about a. being understood b. the value of education c. wisdom versus foolishness d. learning responsibility