Zero Hour in the Parliamentary system has been derived from None of the above.

Zero Hour, also known as Question Hour, is a significant feature of the Parliamentary system in India. It is a time during the Parliamentary proceedings when Members of Parliament (MPs) can raise various issues of public importance that require immediate attention. However, it is important to note that Zero Hour is not derived from South Africa, America, or Japan as mentioned in the options.

Explanation:

1. Origin of Zero Hour:
The concept of Zero Hour originated in the Indian Parliament. It was introduced in the early 1960s to provide MPs with an opportunity to discuss urgent matters and address pressing concerns that may not have been included in the agenda for the day.

2. Duration and Timing:
Zero Hour takes place immediately after the Question Hour in the Lok Sabha (Lower House of Parliament) and Rajya Sabha (Upper House of Parliament). It generally lasts for around 30 minutes, although the duration may vary depending on the Speaker's discretion.

3. Purpose and Significance:
a) Raising Issues: Zero Hour allows MPs to raise issues of public importance, seek clarifications, and make urgent appeals.
b) Seeking Attention: It is a platform for highlighting urgent matters that require immediate action and attention from the government.
c) Public Concerns: MPs can use this time to draw attention to social, economic, or political issues affecting their constituencies or the country as a whole.
d) Government's Response: The government is expected to respond to the concerns raised during Zero Hour and take appropriate action.

4. Procedure and Rules:
a) Permission: MPs need to seek permission from the Speaker or Chairperson to raise a matter during Zero Hour.
b) Time Allocation: The time allocated to each MP is limited, usually a few minutes, to ensure that multiple issues can be addressed.
c) Unstarred Questions: During Zero Hour, MPs can also seek clarifications or ask questions related to unstarred questions, which are those not listed for oral answers during Question Hour.

In conclusion, Zero Hour in the Parliamentary system of India is a time allocated after Question Hour for MPs to raise urgent matters and address public concerns. It is not derived from South Africa, America, or Japan, as indicated in the options.