Select the sentence that uses a perfect modal to show strong speculation about the past:
- Ariel might sing for the prince at his palace.
- Ariel must have hidden her treasure in a coral cave.
- Ariel can hide her treasure in a coral cave.
- Ariel should hide her treasure in a coral cave.
Explanation
Must have + past participle expresses a strong guess or near certainty about a past action.
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