What distinctive feature does rosemary have on its stem?

Rosemary is characterized by its stiff, needle-like leaves that grow on a woody stem. This distinctive feature not only contributes to its resilience and drought resistance but also reflects its adaptation to the Mediterranean climate, where it typically thrives. The stiff leaves help reduce moisture loss, while the woody stem provides structural support for the plant as it grows. Furthermore, the unique flavor and aromatic qualities of rosemary come from its essential oils, which are concentrated in these needle-like leaves. This makes rosemary easily identifiable and distinguishes it from other herbs that may have softer or broader leaves.

In contrast, the other options describe features that do not accurately represent rosemary's physical characteristics, which is why they do not apply.