The correct answer is option 2, which states that the range of the BrahMos supersonic cruise missile is about 280km. A supersonic cruise missile is a high-speed missile that can travel faster than the speed of sound. BrahMos is a joint venture between India and Russia, and in the year 2001, scientists from both countries successfully flight-tested this missile.

To understand the concept of the missile`s range, we need to consider how far it can travel. In this case, the BrahMos missile has a range of approximately 280km. This means that it can travel up to a distance of 280km before reaching its target.

It`s important to note that the range of a missile is a critical factor in determining its effectiveness. A longer range allows the missile to engage targets from a greater distance, giving it an advantage in terms of surprise attacks or reaching deep into enemy territory.

In conclusion, the BrahMos supersonic cruise missile has a range of about 280km, making it a powerful weapon capable of engaging targets from a significant distance.