Operation Blue Star in 1984, a military action against militants in the Golden Temple, led to:

Lasting peace and reconciliation
Escalation of violence
Widespread outrage in the Sikh community
International condemnation of India

The correct answer is: c) Widespread outrage in the Sikh community.

Operation Blue Star was a military operation ordered by the Indian government in June 1984 to remove Sikh militants from the Golden Temple in Amritsar, Punjab. The operation was successful in removing the militants, but it also led to the deaths of hundreds of civilians, including many pilgrims. The operation caused widespread outrage in the Sikh community, and it is still a sensitive topic today.

Option a) is incorrect because Operation Blue Star did not lead to lasting peace and reconciliation. The operation exacerbated tensions between the Sikh community and the Indian government, and it led to a period of increased violence.

Option b) is incorrect because Operation Blue Star did not lead to an escalation of violence. The operation was a one-time event, and it did not lead to a sustained increase in violence.

Option c) is correct because Operation Blue Star did lead to widespread outrage in the Sikh community. The operation was seen as an attack on the Sikh religion and on the Golden Temple, which is a holy site for Sikhs. The operation also led to the deaths of many innocent civilians, which further angered the Sikh community.

Option d) is incorrect because Operation Blue Star did not lead to international condemnation of India. The operation was criticized by some human rights groups, but it did not lead to any significant international condemnation.