.The skeletons of early fossil Homo and archaic Homo sapiens aremarked by very ____skeletons;this pattern demonstrates adramatic ____with the origin ofmodern humans.a. well designed; increaseb. robustly built; decreasec. gracile; increased. sturdy; increase The graph titled "Cortical Area (CA)" shows changes in cortical area over a span of time, measured in millions of years ago (Myr). The x-axis represents the Cortical Area ranging from 450 to 700, while the y-axis shows time from 0 to 2.0 million years ago.There are three series of data points, each indicated by different markers:- **Squares**: Represent "early Homo"- **Circles**: Represent "archaic Homo sapiens"- **Triangles**: Represent "modern Homo sapiens"The graph illustrates how the cortical area has evolved over time across different stages of Homo species. The line begins at approximately 0.2 million years ago with an initial cortical area of about 625, and the values move back in time to larger cortical areas like 700 at around 2.0 million years ago. This trend indicates changes in brain size and capacity over evolutionary time frames.

The cerebral cortex is the part of the brain that consists of the gray matter. The cerebral cortex has some specific areas which are known as the cortical areas. The evolution of the brain throws much light on the size and structure of the cortical areas in early Homo sapiens and modern Homo sapiens. The correct answer option would be - B) Robustly built ; Decrease. The skeletons of early fossil Homo and archaic Homo sapiens are marked by very Robustly built skeletons; this pattern demonstrates a dramatic Decrease with the origin of modern humans. In the graph provided above, we can see that the Cortical Area in early Homo sapiens which dates back to 1.8 million years ago, was around 675, which is very high. This value is around 650 and 625 in early and archaic Homo sapiens, dating back to 0.5 and 0.09 million years ago, respectively. This trend suggests that their skeletons were robustly built. This CA gradually decreased in modern Homo sapiens, which originated around 0.04 million years ago and keeps on decreasing further. Thus, this answer option is correct. The rest of the options are, therefore, incorrect, since the Cortical Area has not increased in modern Homo sapiens.