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Why is AC E incorrect? The stimulus says "for any one of instance of reproduction, a given female will use only one of the two methods".
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Why is AC E incorrect? The stimulus says "for any one of instance of reproduction, a given female will use only one of the two methods".
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Yes - but the paragraph does not indicate if the bird must use one method of reproduction, or both, over the course of its lifetime.
Maybe every bird has to give birth at least one time via egg, and one time via live birth. We don't know because there is a lack of information - so it would be wrong to make any inferences regarding this.
In theory, E is probably true (because I doubt the bird HAS to give birth both ways over the course of it's life) - but we cannot assume this based on the information we have.