Because of the buoyancy provided by the ventricles and cerebrospinal fluid, a traumatic blow to one side of the head may cause the brain to "float" back and cause injury when the opposite side of the brain impacts the inside of the skull (a contrecoup injury). thus, a blow to the frontal lobe may also cause damage to what other lobe?

Occipital lobe

Explanation:

A blow to the frontal lobe can also cause damage to the occipital lobe. The occipital lobe is located in the posterior area of the cerebral cortex. It occupies about 12% of the neocortex and is, in turn, linked to the primary and association visual cortex, and to the calcarine groove, a circumvolution that lies just inside it. All these connections constitute a neural center of human vision and visual perception.

Our understanding of the world is based almost exclusively on the sense of sight. The occipital lobe processes visual stimuli permanently, analyzing distances, shapes, colors, movements…