The correct option is C Antherozoid
An antheridium is a haploid structure or organ producing and containing male gametes (called antherozoids or sperm). They are not used for vegetative propagation.
Vegetative propagation is a type of asexual reproduction, which is also called vegetative reproduction occurs in many plants, where a plant grows from any part or fragment of the parent plant, and this type of reproduction is seen both on land and aquatic plants.
A bulbil is a small, young plant that is reproduced vegetatively from axillary buds on the parent plant's stem or in place of a flower on an inflorescence.
A turion is a type of bud that is capable of growing into a complete plant. A bud is where the new plants arise from the nodes. This is also a form of vegetative propagation.
Hence, the correct answer is option “D” – Antherozoid.