Final answer:
The subject of the question is English. The sentence is asking about the opening of an album by someone named 'grande'. More context or information would be needed for a complete understanding.
Step-by-step explanation:
The subject of the question is English.
In the given sentence, 'grande's latest album opened at', we can identify that the sentence is referring to a new album by someone named 'grande'. The sentence is asking where or how the album opened. To fully understand the meaning of the sentence, we would need more context or information. However, based on the given information, we can determine that the subject of the question is related to English language and possibly discussing the opening or debut of a new album.