Passage for Questions 6-10

II. There were humans long before there was history. The archaic humans loved, played, formed close friendships and competed for status and power, but so did chimpanzees, baboons and elephants. There was nothing special about them. Nobody, least of all humans themselves, had any inkling that their descendants would one day walk on the moon, split the atom, fathom the genetic code and write history books. The most important thing to know about prehistoric humans is that they were incognisant animals with no more impact on their environment than gorillas, fireflies or jellyfish. Biologists classify organisms into species.

Animals are said to belong to the same species if they tend to mate with each other, giving birth to fertile offspring. Horses and donkeys have a recent common ancestor and share many physical traits. They will mate if induced to do so but their offspring, called mules, are sterile. Mutations in donkey DNA can therefore never cross over to horses, or vice versa. The two types of animals are consequently considered two distinct species, moving along separate evolutionary paths. By contrast, a bulldog and a spaniel may look very different, but they are members of the same species, sharing the same DNA pool. [203 words] (Extracted from Sapiens: A Brief History of Humankind by Yuval Noah Harari)

Which of the following can be inferred as the most significant characteristic of prehistoric humans, as per the passage?

The correct answer is: Their inability to distinguish themselves from other species in terms of environmental impact

Step-by-Step Explanation:

1. Analyze the Passage:
In the first paragraph, the passage explicitly states: "The most important thing to know about prehistoric humans is that they were incognisant animals with no more impact on their environment than gorillas, fireflies or jellyfish."

2. Evaluate the Options:

- Option 1: "Their conscious effort to alter and shape their environment for survival" is incorrect because the text states they were "incognisant animals" with no significant impact on their environment.
- Option 2: "Their complex social organization and clear hierarchical structures that set them apart from other species" is incorrect because the passage notes that although they competed for status and power, "so did chimpanzees, baboons and elephants. There was nothing special about them."
- Option 3: "Their evolutionary divergence was marked by warfare and the pursuit of dominance over rival species" is not mentioned or supported by the passage.
- Option 4: "Their inability to distinguish themselves from other species in terms of environmental impact" directly rephrases the passage's assertion that prehistoric humans had no more impact on their environment than gorillas, fireflies, or jellyfish.

3. Conclusion:
Therefore, the most significant characteristic highlighted in the passage regarding prehistoric humans is their negligible environmental impact, which made them indistinguishable from other species at the time.