Final answer:
Cilium would likely be the shortest among the given options. Cilia are hair-like appendages found on the cell surface of organisms like Paramecium.
Step-by-step explanation:
Cilium would likely be the shortest among the given options. Cilia are hair-like appendages found on the cell surface of organisms like Paramecium. They are shorter and found in larger numbers compared to flagella, which are whip-like structures seen in organisms like Euglena.