The birth anniversary of which former Prime Minister of India is observed as Sadbhavana Diwas (Harmony Day)?

Introduction / Context:
Sadbhavana Diwas, also known as Harmony Day, is observed in India to promote national integration, communal harmony, non violence, and peace among all communities. It is celebrated on the birth anniversary of a former Prime Minister of India who emphasised the importance of youth, modernisation, and national unity. Questions about Sadbhavana Diwas frequently appear in competitive exams under Indian polity and general awareness because they connect political leadership with social values.

Given Data / Assumptions:

• The question asks on whose birth anniversary Sadbhavana Diwas is observed.
• Four former Prime Ministers are given as options: Jawaharlal Nehru, Rajiv Gandhi, Lal Bahadur Shastri, and Indira Gandhi.
• We assume the commonly accepted understanding that Sadbhavana Diwas is linked to a leader associated with harmony and modernisation.
• The date itself is not asked; only the personality is needed.

Concept / Approach:
The concept being tested is association of national observances with specific leaders. Sadbhavana Diwas is observed on the birth anniversary of Rajiv Gandhi, who served as Prime Minister of India in the 1980s. His leadership is often remembered for efforts in technology, communication, and youth oriented policies, as well as for promoting harmony among diverse communities. The approach in solving this question is to recall that Rajiv Gandhi's birth anniversary has been dedicated to Sadbhavana Diwas, rather than to any other special day mentioned for other leaders.

Step-by-Step Solution:
Step 1: Identify that Sadbhavana Diwas is connected with harmony, peace, and integration in the Indian context.Step 2: Recall that this day is observed on the birth anniversary of Rajiv Gandhi.Step 3: Examine the options: Jawaharlal Nehru, Rajiv Gandhi, Lal Bahadur Shastri, and Indira Gandhi.Step 4: Confirm from memory that Rajiv Gandhi is the leader whose birth anniversary is marked as Sadbhavana Diwas.Step 5: Choose Rajiv Gandhi as the correct answer.

Verification / Alternative check:
To verify, recall that other leaders have different dedicated observances: Nehru is closely associated with Children Day on 14 November, while Lal Bahadur Shastri is remembered along with Mahatma Gandhi on 2 October, and Indira Gandhi is associated with distinct anniversaries and events. In contrast, Rajiv Gandhi's birth anniversary has been specifically linked with Sadbhavana Diwas, focusing on harmony and national integration. This pattern confirms that Rajiv Gandhi is the correct choice.

Why Other Options Are Wrong:
Jawaharlal Nehru's birth anniversary is best known as Children Day, not as Sadbhavana Diwas. Lal Bahadur Shastri shares a birth date with Mahatma Gandhi, and his remembrance days focus more on his leadership and values rather than a named Sadbhavana observance. Indira Gandhi's anniversaries are commemorated for her role as Prime Minister and historical impact but are not officially used for Sadbhavana Diwas. Therefore, choosing any of these would reflect confusion between different commemorative practices.

Common Pitfalls:
Students may confuse which leader is linked to which national day, particularly among members of the Nehru Gandhi family. A common mistake is to associate Sadbhavana Diwas with Jawaharlal Nehru simply because he is a widely known Prime Minister whose birth anniversary is already a significant day. To avoid such confusion, learn a clear mapping: Children Day for Nehru, Sadbhavana Diwas for Rajiv Gandhi, and other distinct commemorations for Lal Bahadur Shastri and Indira Gandhi. Repeated revision of these associations will make it easier to select the correct leader in exam questions.

Final Answer:
Sadbhavana Diwas is observed on the birth anniversary of former Prime Minister Rajiv Gandhi.