Which fuze is classified as a Fixed-time Fuze for the M224, 60-mm mortar?

The M65A1 fuze is classified as a Fixed-time Fuze for the M224, 60-mm mortar because it is designed to detonate at a predetermined time after being fired. This type of fuze ensures that the projectile will explode either upon reaching a specific altitude or after a set period, allowing for effective engagement of targets behind cover or to control the effects of the munition in relation to friendly forces.

Fixed-time fuzes are particularly useful in situations where precise timing is critical, such as coordinating with other units or achieving specific effects on target. This categorization means that the M65A1 provides a dependable method to ensure the munition detonates at the desired moment in the target area.

Other fuzes mentioned in the options, such as the M734 Multi-option Fuze or the M52A1, may have varying functionalities or be classified differently, such as having variable settings or being impact-sensitive, but they do not fall into the Fixed-time Fuze category specifically for the M224, 60-mm mortar.