Ginger is propagated through:

✅Explanation:
Ginger is a plant that is propagated through its rhizomes. Rhizomes are underground stems that grow horizontally and have nodes from which new shoots and roots can emerge. To propagate ginger, a piece of rhizome with at least one "eye" or bud is planted in the soil, and it will grow into a new plant.

• Why Rhizomes are Preferred for Ginger Propagation:
Vegetative Reproduction: Rhizomes allow for vegetative reproduction, meaning the new plant is genetically identical to the parent plant. This ensures consistency in the ginger's quality and characteristics.
Efficient and Easy: Propagating ginger through rhizomes is a simple and efficient method, as it doesn't require specialized skills or equipment.
Quick Growth: Ginger plants grown from rhizomes establish themselves quickly and can produce a harvest in a relatively short time.

📌Other Options Explanations:
(a) Budding: Budding is a grafting technique where a bud from one plant is inserted into another.
(c) Seed: Ginger rarely produces viable seeds, and even when it does, growing ginger from seed is a slow and unreliable process.
(d) Suckers: Suckers are shoots that arise from the base of a plant. While some plants can be propagated through suckers.

🛑 Additional Information:::
Rhizome is a type of Vegetative propagation of asexual reproduction.
Vegetative propagation is a mode of reproduction in which new plants are formed from vegetative parts (vegetative propagules) of the plant like root, stem, etc.
Since the formation of these vegetative propagules does not involve two parents, the process involved is asexual.
It is very common in higher angiosperms.
A rhizome is a form of plant stem that consists of nodes from which roots and shoots emerge. 
Rhizomes can be found on the surface of the soil or underneath.
Rhizomes are distinguished by their steep growth, which allows new shoots to emerge from the ground. 
When a rhizome is separated, each component is capable of growing a new plant.
Example- As in Ginger, Rhizome are capable of giving rise to new offspring.

🛑 Additional Information:::
Following are some units of vegetative propagation:Rhizome – GingerBulb – Onion, GarlicTuber – potatoBulbil – AgaveLeaf buds – BryophyllumOffset – Hyacinth and pistiaRunner – OxalisSucker – Mint