Which of the following sentences should be removed from the conclusion paragraph?

Question

this is the passage

The Great Pyramid of Giza is one of the tallest pyramids in Egypt. It is located in the city of Cairo. The pyramid was built by the Egyptians around 2560 BCE as a tomb1 for their king, Khufu. The Great Pyramid of Giza is 481 feet tall and 755 feet long, and it is considered one of the seven wonders of the world.
The massive pyramid structure covers an area of 13 acres and was built with approximately 2.3 million stone blocks. More than a hundred thousand people worked for many years to construct this massive pyramid. The Pyramid of Djoser is the oldest pyramid in the city of Saqqara in Egypt. The Great Pyramid of Giza is part of a larger complex that includes two smaller pyramids: the Pyramid of Khafre and the Pyramid of Menkaure. The Great Pyramid is an example of the extraordinary talent, skills, and engineering abilities of the Egyptian civilization.

Answer 1

The sentence that should be removed is the third sentence in the second paragraph that begins “The Pyramid of Djoser is ...” The passage is mainly about the Great Pyramid of Giza not the Pyramid of Djoser. This sentence does not fit in the passage and adds nothing to our knowledge of the main topic of the passage.