Answer: incomplete questions, the answers are not given and here are the options.
a. More anterior
b. More posterior
The correct option is more anterior.
Explanation:
Foramen magnum is more anterior in humans that chimps because it is a form of adaptive features posses by humans to maintain balance of the head on top the cervical vertebral column during bipedal movement and the orthograde trunk postures. The foramen magnum is located at the center below the braincase this is because the head sits atop the upright spine in bipedal positions.
