World Day for Audiovisual Heritage, observed to raise awareness of the importance of audiovisual documents, is celebrated on which of the following dates?

Introduction / Context:
World Day for Audiovisual Heritage is a UNESCO led observance aimed at highlighting the importance of audiovisual documents such as films, sound recordings, and broadcasts, which preserve the cultural and historical memory of societies. This day draws attention to the need for preservation, restoration, and access to these fragile materials. In competitive exams, questions about such specialised international days test a candidate's breadth of general awareness beyond the most common observances, making it important to know both the purpose and the exact date of this day.

Given Data / Assumptions:

• The question is about World Day for Audiovisual Heritage.
• It asks for the calendar date on which the day is observed.
• Four dates in late October are provided: 28, 27, 29, and 25 October.
• We assume the standard UNESCO calendar where this day has a fixed annual date.

Concept / Approach:
The concept is awareness of culture and heritage related international days. World Day for Audiovisual Heritage is observed on 27 October each year. The approach is to remember that this day falls in the last week of October and is specifically linked to the safeguarding of audiovisual heritage. Connecting the idea of heritage preservation with late October helps anchor the date in your memory. Many exam guides list this day alongside other UNESCO related observances, so recognising it in that context is also useful.

Step-by-Step Solution:
Step 1: Identify that the question is asking about the World Day for Audiovisual Heritage.Step 2: Recall from cultural awareness notes that this day is celebrated on 27 October every year.Step 3: Consider the options: 28 October, 27 October, 29 October, and 25 October.Step 4: Confirm that 27 October, option B, matches the memorised date.Step 5: Select 27 October as the correct answer.

Verification / Alternative check:
A simple way to verify is to associate the number 27 with audiovisual heritage and to remember that this observance is not at the beginning but towards the end of October. Some students build a mental link that just as archives preserve old films and recordings, this special day also appears near the end of the month, symbolising preservation over time. This metaphor can help confirm that the correct date is 27 October rather than a nearby alternative like 25 or 28 October.

Why Other Options Are Wrong:
28 October and 29 October are close in time but do not correspond to the official date designated for the World Day for Audiovisual Heritage. 25 October is also not associated with this particular observance. These options are designed to test whether you know the exact date or only have a vague idea that the day falls in late October. Since only 27 October is the correct UNESCO date, the other choices are incorrect in this context.

Common Pitfalls:
Students sometimes ignore less common observances such as those related to heritage or culture, focusing only on major days like World Environment Day or World Health Day. Another pitfall is to confuse World Day for Audiovisual Heritage with days related to press, information, or literacy, which may fall in other months. To avoid these issues, try to revise at least a short list of UNESCO specific days and practice their dates with flashcards so that even relatively specialised observances become familiar.

Final Answer:
World Day for Audiovisual Heritage is observed every year on 27 October.