The international township built near Pondicherry in India in collaboration with UNESCO is known by which of the following names?

Introduction / Context:
India hosts several projects supported by international organisations such as UNESCO. One unique project is an experimental international township near Pondicherry intended to promote human unity and sustainable living. This township is often mentioned in questions about world organisations, culture and Indian geography. Recognising its name helps students connect UNESCO collaborations with actual places in India.

Given Data / Assumptions:

• The township is near Pondicherry in India.
• It was built in collaboration with UNESCO.
• Options are Broadway, Gayaville, Auroville and Elbaville.
• We assume some familiarity with South Indian cultural and spiritual centres.

Concept / Approach:
The township in question is Auroville, conceived by Mirra Alfassa also known as the Mother, associated with Sri Aurobindo philosophy. It is designed as an international community where people from many countries can live together in harmony beyond national and religious boundaries. UNESCO has supported the project and passed resolutions encouraging its development. The other option names are not linked to this concept or location. The approach is to recall the association between Pondicherry, Sri Aurobindo and the name Auroville.

Step-by-Step Solution:
Step 1: Recall that near Pondicherry there is a planned township called Auroville, whose name comes from Sri Aurobindo.Step 2: Know that Auroville was endorsed by UNESCO as an experiment in human unity and sustainable living.Step 3: Compare the options. Broadway is usually a famous street and theatre district in New York, not a township in India.Step 4: Gayaville and Elbaville do not correspond to any known UNESCO supported townships near Pondicherry.Step 5: Auroville matches both the location and the UNESCO collaboration described in the question.

Verification / Alternative check:
Official descriptions of Auroville state that it was founded in 1968 near Pondicherry as a universal township where people of all countries can live in peace and progressive harmony. UNESCO has passed several resolutions commending Auroville as a project of importance for the future of humanity. Tourist guides and geography textbooks also list Auroville as an attraction in the region. No similar descriptions exist for Broadway, Gayaville or Elbaville in connection with Pondicherry.

Why Other Options Are Wrong:
Broadway is wrong because it is most commonly associated with New York theatre and has no link to a UNESCO supported township in India. Gayaville and Elbaville appear as invented names with no recognised connection to Pondicherry or UNESCO projects. They may look plausible because they end with ville, but they do not match any real township in this context. Only Auroville is a genuine international township located near Pondicherry.

Common Pitfalls:
Students may be confused by the similar sounding endings of the options and choose randomly if they do not remember the correct name. Another pitfall is not linking the root word Auro with Sri Aurobindo and the spiritual community around Pondicherry. To avoid errors, remember the trio Pondicherry, Sri Aurobindo and Auroville as a connected group in your mind, along with the keyword UNESCO.

Final Answer:
The international township near Pondicherry built in collaboration with UNESCO is called Auroville.