Question

1. the function of this part is to: a transmit mechanical power by meshing teeth. b transmit mechanical power by acting as a rigid driveshaft. c transmit mechanical power by attaching a chain. d convert mechanical power to gripping force

Explanation:

Gears transmit mechanical power through the meshing of their teeth. This is their fundamental function. Rigid driveshafts are different components, chains are used with sprockets, and gears don't convert power to gripping force in their basic operation.

Answer:

A. Transmit mechanical power by meshing teeth