Which of the following is considered a form of injurious falsehood?

Injurious falsehood refers to a statement that is false and made with malice, resulting in harm to someone's economic interests or business reputation. Malicious interference with prospective economic advantage falls squarely within this definition because it involves wrongfully interfering with someone's ability to engage in economic relationships or transactions, often by spreading false information or engaging in other deceptive practices with the intent to harm.

This type of interference specifically targets the economic relationships that a party could reasonably expect to develop or maintain, and if maliciously carried out, it can lead to substantial financial damage, fitting neatly into the concept of injurious falsehood.

The other choices, while related to the notion of interference or unfair practices, pertain to different legal concepts. Unfair competition relates to broader business practices that are harmful to competitors but may not directly manifest as false statements. Interference with copyright addresses violations of intellectual property rights that may not necessarily include falsehoods, and interference with family relationships involves personal relationships rather than economic ones, making it outside the scope of injurious falsehood in a business context.