Answer: B. the British responded to the Salt March by jailing the protesters and ending the salt tax
Explanation: The Salt March, also known as the Salt Satyagraha, was a nonviolent protest led by Mahatma Gandhi in 1930 against the British salt monopoly in India.
During the Salt March, Gandhi and his followers marched for approximately 240 miles from Sabarmati Ashram to the coastal village of Dandi in Gujarat. The purpose of the march was to challenge the British monopoly on salt production and the imposition of a salt tax.
The British response to the Salt March was initially one of confusion and disbelief as they were surprised by the widespread participation and the nonviolent nature of the protest. As the Salt March grew in popularity and support, the British government became more concerned about its potential to inspire further civil disobedience and protests which led them to arrest some of the leaders and participants of the march. These arrests included Mahatma Gandhi himself, as a means of suppressing the movement, and were met with public outcry and international condemnation.
Please note that while the march occurred in 1930, the salt tax was drastically reduced in 1931 but was not repealed until 1947 when India gained its full independence.