Final answer:
The maximum amount the landlord can require for a security deposit is twice the monthly rental amount, which is $3,700.
Step-by-step explanation:
In the given scenario, the landlord in Hawaii has set the monthly rent for a residential unit at $1,850. According to the information provided, the maximum amount the landlord can require for a security deposit is twice the monthly rental amount, which is $1,850 x 2 = $3,700.