Final answer:
The sentence 'Strangely, no one seemed to know where Miriah had gone.' contains a correctly placed comma after the introductory element 'Strangely'.
Step-by-step explanation:
Correct comma usage is key in ensuring clarity in writing. This includes not overusing commas, as well as placing them correctly to separate clauses, items in a list, or to introduce explanatory information. One should also avoid commas after subjects or verbs unless necessary.
The sentence: 'Strangely, no one seemed to know where Miriah had gone.' contains a correctly placed comma. The comma is correctly placed after the adverb 'Strangely', which is an introductory element in the sentence.