Final answer:
The author's purpose is to inform the reader about the history and cultural significance of tomatoes.
Step-by-step explanation:
The author's purpose in the given passage is to inform the reader about the history and cultural significance of tomatoes. The passage explains how tomatoes originated in South America, were taken to Europe by the Spanish, and gradually became a popular food ingredient in various cuisines around the world. The author also highlights the brave individuals who first consumed tomatoes, ultimately leading to their widespread acceptance.