Final answer:
The sentence 'The school bus is now coming!' is the correct conversion into an exclamation. The exclamation mark at the end emphasizes strong emotion or surprise related to the bus's arrival.
Step-by-step explanation:
To convert the sentence 'The school bus is now coming' into an exclamation, one should utilize the exclamation mark (!) at the end of the sentence. This punctuation mark is used to indicate strong emotions or emphasis. Thus, the correct option from the ones provided would be 'The school bus is now coming!' represented as option B. This rendition of the sentence communicates excitement, urgency, or surprise related to the arrival of the school bus.
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