During India`s freedom struggle, the first "All India Hartal" was led by the protest against the Rowlatt Act. The Rowlatt Act was a legislation passed by the British government in 1919, which granted the authorities sweeping powers to arrest and imprison individuals suspected of revolutionary activities without trial. This act was highly controversial and met with strong opposition from the Indian population.

Option 2, the protest against the Jalianwalabagh incident, is not the correct answer as the Jallianwala Bagh massacre took place in 1919, a few months after the All India Hartal, and was actually a response to the Rowlatt Act.

Option 3, the arrest and trial of Mahatma Gandhi, is not the correct answer as the first All India Hartal was organized in 1919, while Gandhi`s arrest and trial took place in subsequent years.

Option 4, the arrival of the Simon Commission, is not the correct answer as the Simon Commission arrived in India in 1928, almost a decade after the All India Hartal.

Therefore, the correct answer is option 1, as the protest against the Rowlatt Act led to the first All India Hartal.