Final answer:
In Hawaii, only the five-unit apartment building constructed by Sunny Side Development in 2016 must comply with the fair housing laws related to accessibility.
Step-by-step explanation:
In Hawaii, the fair housing laws related to accessibility require compliance in certain scenarios. According to the Fair Housing Act of 1968, any property built after the enactment of the Act must comply with accessibility standards.
In this case, only option c) Sunny Side Development, which built a five-unit apartment building in 2016, must comply with Hawaii's fair housing laws related to accessibility. Options a), b), and d) do not mention any constructions or substantial remodeling that would require compliance with accessibility laws.