Herbal drugs are precisely defined by ) order and plant kingdom botanical scientific name plant family trinominal system

The answer is **botanical scientific name**. Here's why:* **Botanical scientific name:** This is the most precise way to identify a plant species. It uses a standardized, two-part Latin name (genus and species) that is universally recognized by scientists and herbalists. This ensures that everyone is referring to the same plant, avoiding confusion and potential harm from misidentification.Let's look at why the other options are less precise:* **Order and plant kingdom:** These are broader classifications and don't pinpoint a specific plant. For example, many plants belong to the same order but have different medicinal properties.* **Plant family:** This is a more specific classification than order and kingdom, but still encompasses multiple species. * **Trinominal system:** This system adds a third part to the scientific name, often indicating a subspecies or variety. While it provides more detail, it's not always necessary for precise identification of herbal drugs.**In summary, the botanical scientific name is the most reliable and precise way to define herbal drugs, ensuring accurate identification and consistent quality.**