Choose the one word which can be substituted for the given sentence.
A speech delivered without any preparation.

Correct option is C

The correct one-word substitution for "A speech delivered without any preparation" is (c) Extempore.
Correct word: Extempore (बिना तैयारी के भाषण)
Example: The teacher asked him to deliver an extempore speech on environmental conservation.
Explanation: "Extempore" refers to something spoken or performed without prior planning or preparation, often delivered spontaneously.
Meanings of other options:
· Debate: A formal discussion on a specific topic where opposing arguments are presented (Hindi: वाद-विवाद)।
· Example: The students participated in a debate about climate change.
· Declamation: The act of delivering a speech with rhetorical or emotional emphasis, often pre-prepared (Hindi: वक्तृत्व कला)।
· Example: She won the declamation contest with her powerful speech.
· Symposium: A formal meeting or conference where a specific topic is discussed by experts (Hindi: संगोष्ठी)।
· Example: The symposium on renewable energy was highly informative.