What type of counterfire provides immediate indirect and joint fires to neutralize enemy indirect fire weapons?

Reactive counterfire is specifically designed to address immediate threats posed by enemy indirect fire weapons, such as artillery and mortars. This type of counterfire is executed quickly in response to enemy actions, particularly when receiving incoming fire. It aims to neutralize the enemy's capability by striking their indirect fire positions as soon as their location is determined, often utilizing direct communication and rapid targeting systems.

In the context of battlefield operations, this immediate response is crucial for minimizing damage and protecting friendly forces. Reactive counterfire typically engages the enemy with the artillery units prepared to respond in real time, utilizing intelligence from various sources, including sound ranging and fire detection systems.

The other approaches, such as SEAD (Suppression of Enemy Air Defenses) and proactive counterfire, serve different operational roles and may not act as swiftly in response to direct artillery attacks. Immediate suppression, while relevant, does not specifically emphasize the counterfire aspect that is central to reactive counterfire. Thus, the definition and operational purpose align closely with the functions of reactive counterfire, making it the correct answer.