what transportation technology was first invented for roller skates?\na. the disk brake\nb. the axle\nc. the…

what transportation technology was first invented for roller skates?\na. the disk brake\nb. the axle\nc. the steel ball bearing\nd. the rubber wheel

what transportation technology was first invented for roller skates?\na. the disk brake\nb. the axle\nc. the steel ball bearing\nd. the rubber wheel

Answer

Answer:

B. The axle

Brief Explanations:

Axles were crucial for early roller - skates to hold wheels in place and enable movement. Disk brakes, steel ball bearings, and rubber wheels were not the first - invented technologies for roller skates.