Answer:
initiator
Explanation:
Dennis playing the role of the initiator. Consumer decision roles are classified into five, these are; initiator, influencer, decider, buyer and user.
The initiator is the individual who first suggest the buying of a particular product and in the context of the question, Dennis was the first to suggest that PlayStation be bought and as such is the initiator. He is also most likely the user also while his parents will most likely be the buyer.
