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it is applied to a speech ginven recited or a song sung without advance notice or warning​

Sagot :

Answer:

extemporaneous

Explanation:

done, spoken, performed, etc., without special advance preparation; impromptu: an extemporaneous speech.

[tex]\small\textsf{The correct answer is Impromptu}[/tex]

[tex]\small\textsf{Because Extemporaneous Speech is specially applied to an unmemorized speech.}[/tex]