The basic components of ammunition are:

• A. case, primer, gunpowder, projectile(s)
• B. case, primer, propellant, projectile
• C. cartridge, primer, gunpowder
• D. shell, primer, gunpowder, projectile

Answer: (A)

The basic idea being tested is that ammunition is built from four essential parts that work together: a case that holds everything, a primer to ignite the charge, a propellant to create the gas that drives the bullet, and the projectile itself.

This answer is best because it lists all four components in the familiar order: case, primer, gunpowder (propellant), and projectile. The term gunpowder is a common, traditional name for the propellant, and in many safety and training contexts it’s understood to mean the propellant that powers the bullet. So it communicates the same idea clearly and completely.

The other choices aren’t as correct for a couple of reasons. One option omits a component, or uses a term that isn’t the standard for small-arms ammunition (shell instead of case), which can lead to confusion about what's inside a cartridge. The remaining option that uses propellant instead of gunpowder is technically accurate, but the wording here aligns with the familiar four parts as they’re commonly taught, making it the most direct match for the standard description.