Correct Answer: Extempore

Solution : The correct choice is the third option.

Explanation:

The term extempore refers to a speech or performance that is done without prior preparation or planning. It is characterised by being spontaneous and delivered on the spot. In the context provided, extempore accurately captures the meaning of a speech made without preparation.

The meanings of the other options are as follows:

• Parable: A short allegorical story that teaches a moral or religious lesson.
• Eulogy: A speech or piece of writing that praises someone or something, typically delivered at a funeral.
• Chronicle: A factual written account of events in chronological order.