The correct answer is option 3, which states that statements 1 and 2 are both correct.

Statement 1: Salt Satyagraha was indeed a form of Civil Disobedience. It was a nonviolent protest against the British colonial tax on salt in India, led by Mahatma Gandhi. The protesters violated the Salt Act by making their own salt from seawater, which was illegal at the time. This act of civil disobedience aimed to challenge unjust laws and to assert the rights and independence of the Indian people.

Statement 2: The Salt Satyagraha was the first nationalist activity in which women participated in large numbers. Women played a crucial role in this movement by actively participating in protests, making salt, and spreading the message of nonviolence.

Statement 3: This statement is incorrect. Mahatma Gandhi did not first experiment with the Salt Satyagraha in South Africa. He developed the concept of Satyagraha (truth force) during his time in South Africa but applied it to the broader Indian national movement, including the Salt Satyagraha, which took place in India.

In conclusion, only statements 1 and 2 are correct, and the correct answer is option 3.