Mabel always thought of herself as being incapable when it came to fixing things. She easily developed the habit of asking her husband, Abel, to do even the simplest "fix-it" tasks, such as changing a light bulb. Then one day Mabel got a flat tire on a country road. She managed to struggle through the process of changing the tire all on her own. From then on, she felt much more capable, and

started to fix more things around the house. This best illustrates

a. accommodation.
b. assimilation.
c. disequilibrium.
d. fixation.

a