What is the correct gear to start moving a manual transmission vehicle on an uphill grade?

To start moving a manual transmission vehicle on an uphill grade, the appropriate gear is first gear. This gear offers the necessary torque and power needed to overcome the resistance of the incline. When starting on an uphill slope, it's crucial for the vehicle to have a strong grip on the terrain to prevent rolling backward, which is why first gear is utilized.

First gear provides maximum torque, allowing the engine to gain RPMs quickly, which helps the vehicle start moving forward effectively despite the incline. Engaging the clutch while in first gear also allows for precise control over the vehicle's movement, helping the driver manage the transition from being stationary to moving uphill smoothly.

Other gears like second gear would not provide enough torque in this scenario, and starting in neutral or reverse would not effectively engage the vehicle to move forward up the hill.