What is the position of the foramen magnum in the modern human skull, compared to the modern chimp skull

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.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave