The first passage argues that Hindi should be India's official language so the government stops "wasting" money printing documents in many languages. The new statement makes a separate claim: because India would soon be the largest funder of the UN, Hindi should become the UN's official language too. We need to see how this new claim relates to the original argument.
Since the UN statement carries the same pro-Hindi position into a new and bigger context using a new justification, it is best described as extending the original argument, not contradicting, repeating, or concluding it.
Let's summarize:
So the correct option is "The point above extends the speaker's argument."