Final answer:
To properly fill up a tea tin, measure the desired quantity of tea leaves and place them in the tin to ensure freshness and consistent flavor. Analogous to mixing sugar and water, where sugar displaces some water, likewise, tea leaves displace some space within the tin.
Step-by-step explanation:
If a person wants to fill up their tea tin properly, the best approach would be D. Measure the desired quantity of tea leaves and fill the tin accordingly. This ensures that the leaves are fresh and the tin contains only as much tea as needed. Adding new leaves on top of old ones or shaking them around could lead to uneven flavors and potential staleness. The process of making tea involves creating a uniform solution of tea compounds by filtration to remove the leaves, just as sugar dissolves in water to create a homogeneous solution.
Using the analogy, in two full water glasses, if one has less sugar, it contains more water, because the sugar volume is displacing some of the water. Similarly, when filling a tin with tea leaves, you want to consider the space the leaves will take, ensuring you have the right amount for a consistent brew.