Which of these scenarios exemplifies the activity of message production in the communication process?
a. Junior sees an ice cream cart and remembers that his friends told him that they love ice cream.
b. Junior's father shows his empty pocket when Junior asks for ice cream.
c. Junior notices the changes in his father's body language when he asks for ice cream.
d. Junior realizes that money is required to buy an ice cream when his father tells him that he does not have money to buy an ice cream.