The researchers analyzed the residual strontium in the tooth fossils of human ancestors and found that there were differences in the living patterns of men and women in that period, that is, half of the female ancient apes came from far away, and the male ancient apes grew up locally. Of the female, ancient apes will leave the place of birth to mate elsewhere, and the male ancient apes will stay in the place of growth. One possible explanation for the researchers is that related male animals can better protect them from invasion in the field. And that's forcing males to become more dispersed. Which of the following, if true, would best support this view? ['The strontium content in foods that human ancestors routinely consumed is often high.', 'The dental composition reflects the geographical environment of the area where teeth help people live.', 'Large mammals need to avoid inbreeding during evolution and reproduction.', 'The early natural environment was harsh and human ancestors could only survive in gregarious communities.']