Read each of the following statements very carefully. Which one is NOT TRUE?

Question

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The task asks us to read each statement carefully and identify which one is NOT TRUE. 
Option 1: 'The large brains in primates may be related to life history.' This is a plausible and commonly discussed idea: primates often exhibit brain-body scaling linked to life history traits like longer development, extended juvenile periods, and social complexity. It can be considered true in many comparative discussions. 
Option 2: 'Some other mammals have relative brain sizes that are as large or larger than primates'. This is accurate in some cases—for example, certain large-brained mammals (e.g., dolphins, some whales, and perhaps elephants) have relatively large brains compared to body size, though the exact rankings depend on the metric used. Therefore, this statement can be true depending on the comparison standard. 
Option 3: 'All primates have relatively large brains.' This statement is not true. While many primates do have relatively large brains for their body size compared to most other mammals, there are primate species with more modest brain sizes relative to their body size, and the word 'all' makes this overgeneralization incorrect. 
Option 4: 'Bigger primates have bigger brains.' In general, brain size tends to scale with body size across many taxa, including primates, so this is broadly true though not perfect (there are exceptions where brain size does not increase commensurately with body size). 
Overall, the statement that claims every primate has a relatively large brain (Option 3) is the one that is not true, given the variability among primate species and the common expectation that not all primates possess comparatively large brains relative to their body size.

ANT 301 Unit Exam 3 - Primate Ecology and Behavior

Read each of the following statements very carefully. Which one is NOT TRUE?

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