It’s the second one I believe:)
I think the correct terms to fill in the blank would be parietal and somatosensory. Directly behind the frontal lobe is the parietal lobe, where sensory information registers in the somatosensory cortex. It responsible of integrating sensory data among different modalities which includes navigation and spacial sense wherein the main receptive are is the <span>somatosensory cortex</span>. Also, this part of the brain is essential in the processing language. The parietal lobe is divided into two two parts which plays different functions. The first region is responsible for perception and sensation while the other region is responsible for integrating the sensory input in the visual system.
Humans have a density close to 1000 kg/m³ (the density of water). If a human has a mass of 75 kg, the volume would be around 0.075 m³.
