Each year, International Day of Yoga (also called International Yoga Day) is celebrated on 21 June with a specific theme. What was the official theme of International Yoga Day in 2018?

Introduction / Context:
International Day of Yoga is observed on 21 June every year after it was proclaimed by the United Nations General Assembly in 2014. Each year, the celebration is guided by a specific theme that shapes events, posters, and official messages. The 2018 theme is often asked in exams that focus on Indian initiatives, health awareness, and United Nations days, especially because India played a major role in promoting this observance.

Given Data / Assumptions:

• The question is about International Yoga Day, held on 21 June.
• The year of interest is 2018.
• Four theme statements related to yoga and social issues are listed as options.
• Only one exactly matches the official 2018 theme.

Concept / Approach:
The official theme for International Yoga Day 2018 was Yoga for Peace. This theme emphasised how yoga can help individuals and societies cultivate inner calm, harmony, and non violence. To answer correctly, you need to connect 2018 with the keyword peace, instead of confusing it with other years that focused on health, environment, or youth engagement.

Step-by-Step Solution:
Step 1: Focus on the year given in the question, 2018.Step 2: Recall that in 2018 news reports and government publicity repeatedly used the phrase Yoga for Peace when describing International Yoga Day events.Step 3: Look through the options and identify the one that uses this phrase exactly.Step 4: Option A states Yoga for Peace and therefore matches your memory of the 2018 theme.Step 5: Choose option A as the correct answer and confirm that the other options were themes for different years or proposed slogans that did not become the official theme.

Verification / Alternative check:
You can verify this theme by recalling that the main event in 2018 was held in Dehradun, where Indian leaders and international guests performed yoga and emphasised peace and harmony. News articles, government portals, and exam based current affairs compilations all describe 2018 International Yoga Day under the title Yoga for Peace. This consistency across sources confirms the correctness of the option.

Why Other Options Are Wrong:
Connect the Youth is associated with earlier messaging that focused on young people and social media but was not the official 2018 theme.

Yoga for Health was used in another year to stress the health benefits of yoga and therefore does not match the 2018 focus.

Yoga for Environment relates to environmental themes and appears in discussions of later or different campaigns, not in the 2018 official theme.

Common Pitfalls:
Students often confuse the themes because all of them sound similar and positive, and they all relate to yoga's benefits. Without attaching each phrase to a specific year, it is easy to mix up which came when. To avoid this, build a small table of International Yoga Day themes by year, especially for the first few observances, and revise it periodically. Focusing on the key word in each theme, such as peace, health, or environment, helps you recall the correct pairing quickly.

Final Answer:
The official 2018 theme was Yoga for Peace.