The Correct Answer and Explanation is:
The correct answer is one quart.
One liter is a unit of volume in the metric system, while the quart is a unit of volume in the standard American (US customary) system. When comparing them, they are remarkably similar in size, making them the closest equivalents among the choices provided.
Specifically, one liter is equal to approximately 1.057 US liquid quarts. This means a liter is just slightly more than a quart, with the difference being less than 6%. For most everyday purposes, such as cooking or estimating liquid quantities, the two units are often used interchangeably without significant error. For example, a recipe calling for one liter of broth can be satisfied with a one-quart container of broth, and the small difference in volume will likely not affect the final dish.
To understand why the other options are incorrect, it is helpful to compare their volumes to a liter. A gallon is a much larger unit; one US gallon contains four quarts, which is equivalent to about 3.785 liters. Therefore, a gallon is nearly four times the size of a liter. The other options are significantly smaller. A tablespoon is a very small measurement, with about 67.6 US tablespoons in a single liter. Similarly, a fluid ounce is also a small unit of volume. There are approximately 33.8 US fluid ounces in one liter.
Given these vast differences in scale, it is clear that the US customary unit closest in volume to one liter is the quart. Their near one to one relationship makes the quart the only reasonable answer.
