Final answer:
a) Tail domain. The cargo of the Kinesin motor protein binds to the Tail domain of the protein.
Step-by-step explanation:
The cargo of the Kinesin motor protein binds to the Tail domain of the protein. Kinesin is a motor protein that uses ATP hydrolysis to power intracellular motility and transport cargo, such as vesicles containing secretory proteins or neurotransmitters, along microtubule tracks in cells. The Tail domain is responsible for binding to the cargo and facilitating its movement.