What are three methods used to shift the center of gravity (CG) of a rocket forward?

Adding weight to the nose of the rocket is a direct method for shifting the center of gravity forward. This increases the mass at the front end of the rocket, effectively moving the CG forward in relation to the rocket's overall structure.

Making the rocket longer can also alter the CG. When a rocket is elongated, the new mass distribution can be adjusted, often resulting in a forward shift of the CG, especially if the nose section is designed to be heavier than the tail.

Lastly, using a smaller or lighter motor contributes to shifting the center of gravity forward as well. A lighter motor means that there is less mass located towards the rear of the rocket. This helps to rebalance the overall mass distribution by allowing the front section of the rocket to dominate the CG.

In contrast, other options suggest methods that either do not effectively shift the CG forward or may even cause it to move backward, such as increasing weight or using heavier components in the tail section.