text 1
while researchers are still learning about how the appendix serves today’s human body, some scientists think this organ may have been essential to our ancestors. one theory is that, in the past, the appendix was an important organ to a plant - eating ancestor of humans. back then, the appendix may have been much larger to help humans digest tough foods like tree bark. in modern humans, though, it is only a small pouch attached to the large intestine.

text 2
humans once needed wisdom teeth to survive, but now these molars at the back of the mouth are less necessary and often cause problems. wisdom teeth were essential to early human ancestors, helping them chew their tough, uncooked food. modern man’s food, though, is typically cut up, cooked, and easier to eat, making wisdom teeth largely unimportant. beyond just diminished utility, though, wisdom teeth can cause trouble for many people; they can become impacted in the jaw, cause pain, and need to be extracted.

which sentence best combines the main, or central, ideas of both texts?

wisdom teeth and the appendix often need to be surgically removed because they cause significant problems in modern humans.

wisdom teeth and the appendix may have been essential to our human ancestors, but their utility has changed over time.

the appendix and wisdom teeth are important parts of the human body, helping us process tough, chewy foods that are hard to digest.

Question

text 1
while researchers are still learning about how the appendix serves today’s human body, some scientists think this organ may have been essential to our ancestors. one theory is that, in the past, the appendix was an important organ to a plant - eating ancestor of humans. back then, the appendix may have been much larger to help humans digest tough foods like tree bark. in modern humans, though, it is only a small pouch attached to the large intestine.

text 2
humans once needed wisdom teeth to survive, but now these molars at the back of the mouth are less necessary and often cause problems. wisdom teeth were essential to early human ancestors, helping them chew their tough, uncooked food. modern man’s food, though, is typically cut up, cooked, and easier to eat, making wisdom teeth largely unimportant. beyond just diminished utility, though, wisdom teeth can cause trouble for many people; they can become impacted in the jaw, cause pain, and need to be extracted.

which sentence best combines the main, or central, ideas of both texts?

wisdom teeth and the appendix often need to be surgically removed because they cause significant problems in modern humans.

wisdom teeth and the appendix may have been essential to our human ancestors, but their utility has changed over time.

the appendix and wisdom teeth are important parts of the human body, helping us process tough, chewy foods that are hard to digest.

Accepted Answer

# Brief Explanations:
Text 1 says the appendix was essential for ancestors (digesting tough foods) but is small in modern humans. Text 2 says wisdom teeth were essential for ancestors (chewing tough food) but are less necessary now. The second option captures both organs' past importance and changed utility over time. The first option focuses on removal (Text 2 mentions wisdom teeth removal, Text 1 doesn't mention appendix removal), and the third focuses on modern importance (which isn't the case).
# Answer:
Wisdom teeth and the appendix may have been essential to our human ancestors, but their utility has changed over time.

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