The passage makes all of the following claims EXCEPT:
Explanation:
As per the second sentence of the fourth paragraph, because of the social upheaval in the elephant social structure, calves are now being taken care of by younger and inexperienced mothers. Thus option 1 is incorrect. Retain it. Option 2 is correct as per the first sentence of the last paragraph. Negate it. Option 3 is true as per the second sentence of the third paragraph and can be negated. Option 4 is true as per the last sentence of the fourth paragraph and can also be negated. Hence, the correct answer is option 1.