Answer :
Final answer:
The type of gunpowder used in a muzzleloader can affect the performance of the projectile.
Explanation:
The one thing that might affect the performance of a muzzleloader projectile is (b) the type of gunpowder used. Different types of gunpowder have different burn rates and produce different amounts of gas, which affects the muzzle velocity and trajectory of the projectile. For example, a faster-burning gunpowder will generally result in a higher muzzle velocity and flatter trajectory, while a slower-burning gunpowder will result in a lower muzzle velocity and more curved trajectory.