Final answer:
The global outcry against British brutality (C) was the only positive outcome from the Jallianwala Bagh massacre, as it drew widespread condemnation and strengthened the Indian independence movement.
Step-by-step explanation:
The only good thing that came out of the protest in Jallianwala Bagh was the global outcry against British brutality (C). The massacre on April 13, 1919, involved British Indian Army troops firing on Indian protestors, resulting in hundreds of deaths and over a thousand injuries. This tragic episode underscored the scale of oppression under British rule and bolstered Indian resolve for independence while drawing international condemnation of the British government's actions in India. The Rowlatt Act was not repealed as a direct result of the massacre, and the recognition of Indian independence took much longer to achieve. There was no amicable resolution with British authorities immediately following the event, although the massacre influenced subsequent adjustments by the British in the form of legislative changes regarding voter eligibility and representation in the national assembly. The Jallianwala Bagh incident profoundly impacted the Indian independence movement, leading to intensified calls for self-rule and eventual political reforms.