Which of the following plant types is likely to have flowers that are often showy?

Forbs are flowering plants that are not grasses, sedges, or rushes. They typically have conspicuous and appealing flowers, often characterized by vibrant colors and distinct shapes, which makes them visually attractive. This feature is advantageous for the reproductive success of forbs, as showy flowers attract pollinators such as bees, butterflies, and other insects, which are essential for the fertilization process.

In contrast, sedges and rushes generally have less showy flowers. They are adapted to different ecological niches and often have more subdued floral structures that do not need to attract pollinators in the same way that forbs do. Grasses also tend to have flowers that are small and wind-pollinated, which means their flowers are typically less noticeable and colorful compared to the showy blooms of forbs. Thus, forbs stand out due to their showy flowers, making them the correct answer.