How are artifacts arranged in ramp to earn additional points?

Artifacts are arranged in ramp to earn additional points specifically by color matching motif order. This method reflects a creative strategy within the context of the competition, where teams can receive extra points for demonstrating attention to detail and thematic consistency through color coordination. Arranging artifacts according to specific motifs in a cohesive color pattern not only showcases the team's design skills but also enhances the visual appeal of their presentation, which is often rewarded in scoring criteria.

The other choices do not effectively capture the scoring nuances related to color matching or thematic arrangements in the context of the competition's rules. While shape, size, or weight might be relevant in other scoring opportunities or throughout gameplay, the specific focus on color matching motif order highlights the importance placed on aesthetics and organized presentation in this scenario. This reinforces the significance of strategic planning and execution in design elements to maximize scoring potential in the competition.