Final answer:
Night ventilation, or night flushing, works best in climates where daytime and nighttime temperatures are similar.
Step-by-step explanation:
Night ventilation, or night flushing, works best in climates where daytime and nighttime temperatures are similar: true.
When the daytime and nighttime temperatures are similar, it means that the outside air at night is cooler. By opening windows during the night, cooler outside air can be brought indoors, effectively lowering the temperature inside the building without the need for air conditioning. This technique is most effective in regions with similar daytime and nighttime temperatures.