Picturing the way a volcano erupts to remember how a volcano functions is called
a. visualizing
c. keywording
b. categorizing
d. all of these

The correct answer to this question is letter A which is visualizing. Visualizing is the act of picturing a certain situation in your head to recall how it works. In this example, you want to remember how a volcano functions. A volcano erupts. So in order to remember this, you picture in your mind a volcano that is erupting. So once you are asked a question about the functions of a volcano, your mind will immediately show the picture of a volcano erupting. 

122-62 because that is subtraction.