You would expect to see the largest increase in activity within the of a person's brain while they were looking at a blue square, a red triangle, and a yellow circle moving around randomly on a computer screen.

Occipital lobe.

Explanation:

The human brain consists of the four major lobes known as frontal lobe, parietal lobe, temporal lobe and occipital lobe. These lobes perform specific functions in the body.

Occipital lobe is largest lobe and mainly plays an important role in the vision. The different area of the occipital lobe is responsible for identifying the different shape, size and color of the object. The occipital lobe area increases when identifying different objects on the computer screen.

Thus, the answer is occipital lobe.

oceans

indian ocean

pacific ocean

atlantic ocean

arctic ocean

southern ocean

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