What are the three main components of a grenade?

The correct choice identifies the three primary components of a grenade as the Body, Filler, and Fuse.

The Body of the grenade is the outer casing that contains the explosive material. This structure is designed to withstand the pressure generated during detonation and to protect the filler until it is deployed.

The Filler refers to the explosive content within the grenade. This substance is what generates the blast effect upon detonation, and the type of filler can vary depending on the specific purpose of the grenade—whether it is for fragmentation, stun, or other effects.

The Fuse is the mechanism that initiates the explosion. It can be a safety fuse that prevents premature detonation and allows for activation at the appropriate time once the grenade is thrown or activated by the user.

This explanation encapsulates the essential role of each component in the functionality of a grenade, clarifying why these three elements are crucial to its operation. Other choices do not accurately represent the key structural elements that make up a grenade, thus failing to highlight the important functional parts necessary for its use.