Step 1: What is “International Day of Non-Violence”?
It is a UN–designated observance that promotes the principles of non-violence and peace, chosen to coincide with the birth anniversary of Mahatma Gandhi.
Step 2: The official UN date.
The UN General Assembly (Resolution 61/271, 2007) fixed the observance on 2nd October each year—Gandhi Jayanti.
Step 3: Eliminate the given options by meaning.
30 Jan = Martyrs’ Day (India, the day Gandhi was assassinated); 8 Mar = International Women’s Day; 1 May = International Labour Day; 10 Dec = Human Rights Day. None of these equals the UN’s Non-Violence Day.
Step 4: Conclude.
\[
\boxed{\text{Correct date is 2nd October .}}
\]