Final answer:
The question belongs to the subject of English in middle school and is about a mystery or detective story where students are asked to determine the thief.
Step-by-step explanation:
The question 'Who stole the topaz heart?' belongs to the subject of English in middle school. It is likely a question about a mystery or detective story, where students are asked to use their reading comprehension skills to analyze the plot and characters to determine the culprit.
Learn more about Mystery or detective story