Spot the substitute for the given sentence A speech delivered without preparation

"Extempore" means a speech given without preparation making option B correct. Other options are unrelated as "emigrate" means to move "excommunicate" means to exclude and "exaggerate" means to overstate. One-word substitutions simplify descriptions useful in concise writing or speech. This skill enhances clarity in journalism or professional communication. Precise vocabulary conveys specific actions efficiently especially in contexts like public speaking or reporting where accurate language ensures clear and effective communication particularly when describing spontaneous actions or events.