Final answer:
The amount of daylight changes the most at the poles, due to extended daylight hours during summer and reduced or no daylight during winter, due to the Earth's tilt.
Step-by-step explanation:
The amount of daylight each day changes the most at the poles (option D). Due to the Earth's 23.5° axis tilt, during the summer solstice, the Sun is high in the sky for extended periods in the hemisphere tilted toward it, leading to long daylight hours or even 24-hour daylight known as the polar day.
Conversely, during the winter solstice, the opposite hemisphere experiences short daylight hours or none at all, resulting in the polar night. At the equator, the length of day and night remains relatively constant throughout the year, and therefore, the changes in the amount of daylight are minimal.