The safest answer is Macchu Picchu - it's very famous and it's located in Peru, so no other country is known for it.
But Macchu Picchu is built by the Incas - so it's a correct answer too!
The llama is also a characteristic animal for Peru- ut not exclusively of Peru. It's also present in Bolivia, Chile and Argentina
The only option that is not correct is "its love for baseball" - baseball is not speficically popular in Peru, and soccer is their prefer ed sport.
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The statement that best describes how the image reinforces the text is the one that reads as follows: "The image aids readers' understanding of key concepts".
Images are far more explanatory and descriptive. They show what the text tries to say in more graphic way, so the reader gets a clear idea. It is said that a picture is worth a thousand words. By putting together both the images and the text, the readers get the whole picture.