Answer: 1) Social media algorithms
Explanation: Social media algorithms often utilize principles of behaviorism to shape user behavior through rewards (such as likes, comments, and shares) and feedback (such as notifications and personalized content). These platforms use algorithms to analyze user interactions and preferences, then deliver content that is more likely to engage users and keep them on the platform for longer periods of time. This reinforcement encourages users to continue using the platform and engaging with its content.