Option 1 states that the iron stirrup allowed the armoured warrior to sit firmly on a horse without falling off. This is correct. The introduction of the iron stirrup made it easier for soldiers to maintain their balance and stability on horseback, reducing the risk of falling off during combat.

Option 2 states that the iron stirrup allowed for a cavalry charge with lances held tightly to the body, without the rider being thrown off by the shock of impact. This is also correct. With the iron stirrup providing a secure foothold, soldiers were able to maintain their position and balance even during the intense impact of a cavalry charge, ensuring that they could effectively wield their weapons.

Therefore, the correct answer is option 3, which states that both statements 1 and 2 are correct. The iron stirrup played a crucial role in cavalry warfare in India, providing stability and safety to the riders, allowing them to engage in successful warfare tactics.