Which of the Following Describes the Form of Culture Change

Which of the following describes the form of culture change known as diffusion?

A) Many of the foods we eat, such as pasta and chicken, were introduced to us through contact with different cultures around the world.
B) James Hargreaves developed the spinning jenny to increase the efficiency of textile manufacture during the Industrial Revolution.
C) Your parents teach you the proper way to speak to your elders.
D) Medical experiments and discoveries lead to the cure for an epidemic disease such as polio.