that which


Senior Member
Hi, what does 'that which' mean here?

I had to verify that which you provided. A strict security protocol is, in fact, required in my business.

I can quite make nothing of it.
I found that it means: the one that ...
But I dont know to get the meaning of it
Help, please?
  • Copyright

    Senior Member
    American English
    That's a very stilted way of writing. I suppose it means "I had to verify that (information) which you provided." Or some other noun for "information" – it refers to whatever was provided.
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