Which of the following is NOT an example of anti-competitive conduct that would be deemed illegal?

The correct choice indicates the option that is not deemed anti-competitive conduct because it highlights the importance of maintaining the integrity of the Multiple Listing Service (MLS) while still allowing for some levels of criteria enforcement.

Limiting MLS membership based on criteria that are designed to protect the integrity of the MLS can be a legitimate practice, as it ensures that only qualified individuals or entities with a track record of professionalism and ethical behavior can participate. This practice aims to enhance the quality of listings and protect both consumers and brokers by fostering a trustworthy marketplace.

On the other hand, fixing commission fees or requiring exclusive use of a specific brokerage for property management directly manipulate market competition and could harm consumers by limiting their choices. Similarly, colluding with other brokers to boycott a competitor is an overt attempt to stifle competition, which goes against fair market practices. These activities can distort the housing market and harm consumers by restricting access to services, which is why they are classified as illegal anti-competitive conduct. The focus of the correct choice is on ensuring professional standards without restricting competition, aligning with legal frameworks governing real estate practices.