Answer:
An urban area with several waterways.
Step-by-step explanation:
An urban area with several waterways is likely at the highest risk for a dengue outbreak because the mosquitoes that transmit dengue reproduce in stagnant water. In an urban dry area there is no danger, as there is no stagnant water there and mosquitoes can't reproduce. The same happens in a rural area next to the ocean and in a rural desert area with few trees, there is no place for a dengue outbreak in these locations.