Which of the following actions constitutes "stalking"?

Stalking is defined as a pattern of behavior that involves following or harassing another person in a way that causes them to feel fear or distress. The action that reflects this definition most accurately is following someone multiple times according to a scheme. This behavior indicates a calculated approach to monitoring or pursuing someone, which goes beyond mere chance encounters or casual interactions.

While leaving unwanted messages, watching someone from a distance, and asking someone out repeatedly can also be troubling behaviors, they do not inherently signify the systematic and persistent nature of stalking. Stalking implies a repeated and intentional behavior that aims to invade a person's space and create a sense of threat, which is why the act of following someone multiple times with a specific method fits the legal and psychological definitions of stalking.