The Tribal Cooperative Marketing Development Federation of India Limited (TRIFED) celebrated World Honey Bee Day on which of the following dates?

Introduction / Context:
This question connects an important environmental awareness event, World Honey Bee Day, with a specific celebration organised by TRIFED, an organisation that supports tribal livelihoods in India. Examinations use such questions to test awareness of government initiatives linked with ecology, agriculture and tribal development.

Given Data / Assumptions:

• The organisation mentioned is TRIFED, which works under the Government of India to promote tribal products and livelihoods.
• The event is World Honey Bee Day, celebrated to highlight the importance of bees in pollination and ecology.
• Various dates in August are provided as options, and only one matches the actual celebration date referred to in the question.

Concept / Approach:
The concept here is factual recall about a specific event date. The approach:

• Remember that TRIFED organised activities to celebrate World Honey Bee Day on 19th August.
• Use elimination to remove nearby dates that may refer to other events or are included as distractors.
• Focus on matching the event with government press releases or news, which often highlight the exact date.

Step-by-Step Solution:
Step 1: Note that the question is not asking the general global date of World Bee Day in May, but specifically about a TRIFED celebration of World Honey Bee Day. Step 2: Recall or infer from news and government information that TRIFED celebrated World Honey Bee Day on 19th August as part of its initiatives for promoting beekeeping among tribal communities. Step 3: Look at the options and identify 19th August among the given dates. Step 4: Recognise that 16th, 18th, 20th and 21st August are close but do not match the specific date mentioned in official communications. Step 5: Select 19th August as the correct answer.

Verification / Alternative check:
Verification is possible by referring to official press releases, especially those from the Government of India or TRIFED regarding beekeeping promotion and World Honey Bee Day celebrations. These communications describe the event and clearly state that it took place on 19th August. Standard current affairs compilations for that year also list this event with the same date, confirming the correct choice.

Why Other Options Are Wrong:
21st August: A nearby date but not the one specifically linked with the TRIFED celebration mentioned in the question. 18th August: Also close in time but incorrect for this particular event. 16th August: Not the date used for this celebration and included only as a distractor. 20th August: Another adjacent date which might tempt candidates who only remember that it was in mid to late August.

Common Pitfalls:
Learners may confuse the global observance of World Bee Day in May with the specific World Honey Bee Day celebration in August, or they may recall only roughly that TRIFED celebrated the event in the second half of August and then pick the wrong nearby date. To avoid such confusion, it helps to keep separate notes for global UN style observances and for specific national or organisational events, clearly marking their different dates.

Final Answer:
TRIFED celebrated World Honey Bee Day on 19th August.