What is "it" in the following sentence?
He distorted the shape of a common object to make it harder to recognize.
Is 'it' pronoun?
Is 'it' placeholder?
a pronoun
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He distorted the shape of a common object to make it (that object) harder to recognize.
If you wanted the version with placeholder it, you'd still need another it at the end to refer back to common object:
He distorted the shape of a common object to make it harder to recognize it.
But why add more complexity when the original version will do nicely?
CJ