Pam Wants to Replace Eating Junk Food with the Alternative

Multiple Choice

Pam wants to replace eating junk food with the alternative behavior of eating fruit.Pam makes sure that she always has fruit in her house,so that when she wants something to eat it is easy for her to have fruit.In addition,Pam buys fresh fruit because it does not require any preparation before eating.Which antecedent control strategy is Pam using?​

A) ​decreasing response effort
B) ​increasing response effort
C) ​removing the discriminative stimulus
D) ​arranging establishing operations