Which of the following describes ketchup?

Ketchup is primarily known as a red tomato sauce, which is made from tomatoes, vinegar, sugar, and various spices. The defining characteristic of ketchup is its rich, tomato-based flavor, which is often complemented by sweetness and acidity from the sugar and vinegar. The vibrant red color comes primarily from ripe tomatoes, making the description of ketchup as a red tomato sauce the most accurate.

While ketchup can be sweet and may contain fruit purees as part of its ingredients, its identity is firmly rooted in its tomato content, distinguishing it significantly from herb sauces or pure fruit products. The other options may describe certain sauces or condiments, but they do not capture the essence of what ketchup is.