In India, "National Youth Day" is celebrated every year on which date to honour the birth anniversary of Swami Vivekananda?

Introduction / Context:
Many important national days in India are linked to the birth or death anniversaries of great leaders. National Youth Day is one such observance, associated with Swami Vivekananda, whose teachings continue to inspire young people. This question checks whether students remember the exact calendar date on which National Youth Day is celebrated each year.

Given Data / Assumptions:
- The question asks for the date of National Youth Day in India.
- Options provide four nearby January dates, making the question a test of precise memory.
- It is known that the day is connected to Swami Vivekananda's birth anniversary.
- We assume some familiarity with national celebrations and their significance.

Concept / Approach:
The concept is to recall that Swami Vivekananda was born on 12 January, and the Government of India declared this day as National Youth Day to promote his ideals among the youth. Therefore, the correct date is 12 January. Other dates such as 14, 15 or 17 January are close but do not match his birth anniversary and thus serve as distractors.

Step-by-Step Solution:
Step 1: Remember that National Youth Day is associated with Swami Vivekananda. Step 2: Recall the standard GK fact that his birth anniversary falls on 12 January. Step 3: Connect this with the declaration that this date is celebrated every year as National Youth Day. Step 4: Check the options and identify "January 12" as matching that memory. Step 5: Mark January 12 as the correct answer.

Verification / Alternative check:
To verify, think of school and college functions, speeches and rallies usually held around 12 January in honour of Swami Vivekananda. Many institutions specifically mention that they are celebrating National Youth Day on this date. Official notices and GK books also clearly link 12 January with both his birth anniversary and the national observance. There is no such consistent association with 14, 15 or 17 January, confirming that these are only distractors.

Why Other Options Are Wrong:
January 14 is known in many parts of India for festivals like Makar Sankranti or Pongal, not for National Youth Day.
January 15 is associated in some contexts with Army Day in India, again different from the youth related observance.
January 17 does not carry the standard nationwide identity of National Youth Day in common exam oriented GK notes.
Thus, these dates do not correspond to the event described in the question.

Common Pitfalls:
Because all options fall in mid January, some candidates may mix up festivals and commemorative days if they rely only on approximate memory. Another pitfall is confusing Army Day with Youth Day just because both involve young people and leadership themes. To avoid this, students should build a small table of important dates with month and day clearly mapped to each observance, especially when they are clustered close together on the calendar.

Final Answer:
January 12