If your possible answers are maximum weight and/or number of people the boat can carry safely
maximum gallons of fuel the boat can carry
minimum weight of people and/or gear needed for stability
minimum load capacity of a trailer for this boat
Then the correct answer is maximum weight and/or number of people the boat can carry safely
Maximum gallons of fuel is decided based on your tank size, while a minimum load is not as important. It's mostly about how much weight can it carry, regardless of the form of the weight, either in people, cargo, or combined.