Final answer:
A provincial statute restricting tobacco product displays falls under Public and domestic law, relating to the state's regulation of public health and commercial activities.
Step-by-step explanation:
A provincial statute restricting the display of tobacco products in retail outlets would fall under B) Public and domestic law. This type of law relates to regulations that govern the relationship between individuals and the state, including public health directives and controls over commercial conduct within a province. Such statutes are a part of regulatory law, which is a subset of public law aiming to control activities that can have an impact on the public at large, like the sale and display of tobacco products.