Which of the following practices enhances compliance with landscape maintenance regulations?

Registering for a QAC Category B License is crucial in ensuring compliance with landscape maintenance regulations because it demonstrates that an individual has met the necessary requirements and standards set by regulatory authorities. This licensing process often involves training and testing on relevant laws, best management practices, and the appropriate use of pesticides and fertilizers. By holding this license, landscapers are better equipped to understand and apply the regulations governing their work, thereby reducing the risk of non-compliance and promoting environmentally sound practices.

The other options, while potentially useful in their own right, do not directly address compliance with regulations. Networking with other landscapers can foster knowledge-sharing and support, subscribing to landscaping magazines may provide industry insights and trends, and using exclusively organic fertilizers can be environmentally beneficial. However, these practices alone do not guarantee adherence to the specific legal standards that a QAC Category B License ensures.