Final answer:
The correctly punctuated sentence is: In Headmaster Gradgrind's class, students are never late.
Step-by-step explanation:
The correctly punctuated sentence is: In Headmaster Gradgrind's class, students are never late.
Punctuation is important in writing as it helps convey meaning and clarity. In this sentence, the comma is used correctly to separate the introductory phrase 'In Headmaster Gradgrind's class' from the main clause 'students are never late'.
Using correct punctuation is crucial as it ensures that readers can understand the intended message without confusion or ambiguity.
Learn more about correct punctuation