* U-joints: The U-joints are responsible for connecting the driveshaft to the differential and the wheels. If they are worn out or damaged, they can make a clicking noise when the vehicle is accelerating.
* Driveline: The driveshaft is a long metal tube that connects the transmission to the differential. If it is damaged or bent, it can also make a clicking noise.
* Differential: The differential is responsible for distributing power to the wheels. If it is worn out or damaged, it can also make a clicking noise.
To diagnose the problem, you will need to inspect the U-joints, driveshaft, and differential. If you are not comfortable doing this yourself, you can take the vehicle to a qualified mechanic.