Which of the following actions constitutes harassment?

Following someone with the intent to alarm constitutes harassment because it involves a deliberate and unwanted pursuit of an individual that creates fear or distress. This behavior crosses boundaries of personal safety and emotional well-being, making the targeted person feel uncomfortable and unsafe. Harassment is characterized by unwanted actions that are threatening or intimidating, and following someone with an intent to cause alarm exemplifies this by infringing upon their sense of security and personal space.

The other actions listed do not inherently create the same negative impact. Offering support, for instance, generally promotes a positive environment and fosters relationships. Meanwhile, giving constructive feedback is a vital aspect of communication and improvement in various contexts, including workplace dynamics. Ignoring someone in a conversation could be seen as dismissive or rude but does not carry the direct intent to alarm or threaten someone, as following someone does. Therefore, it is the intent and manner of the action that determines whether it is considered harassment, making following someone with the intention to alarm the correct answer in this context.