The correct answer is (b), Coniferales.
Coniferales is the most advanced order in Gymnosperms because it contains the most diverse and widespread species. Conifers are characterized by their needle-like leaves, cones, and woody stems. They are found in a variety of habitats, including forests, deserts, and mountains.
Cycadales are an order of gymnosperms that are characterized by their large, palm-like leaves and their unique reproductive structures. Cycads are found in tropical and subtropical regions around the world.
Gnetales are an order of gymnosperms that are characterized by their unusual combination of features. Gnetophytes have some features that are similar to angiosperms, such as flowers and fruits. However, they also have some features that are similar to other gymnosperms, such as cones and seeds. Gnetophytes are found in tropical and subtropical regions around the world.
Taxales is an order of gymnosperms that are characterized by their small, scale-like leaves and their cones. Taxales are found in temperate and tropical regions around the world.
In conclusion, Coniferales is the most advanced order in Gymnosperms because it contains the most diverse and widespread species.