Explanation:

Iron Dome is a short-range, ground-to-air, air defence system. It is developed by Israeli manufacturer Rafael Advanced Defense Systems with support from the United States.

• Purpose: It is used for countering rockets, artillery & mortars (C-RAM). It will also counter aircraft, helicopters and unmanned aerial vehicles fired from distances of up to 70 kilometres.
• How does Iron Dome work? The Iron Dome has three main systems. These systems will work together to provide a shield over the area where it is deployed, handling multiple threats

Other key Features

• The missile is capable of being used in all weather conditions, including during the day and night.
• Israel claims the system has stopped thousands of enemy launches from hitting targets, with a success rate of more than 90%.

Hence option 4th is correct.