Relative pronoun vs Interrogative pronoun

[Enedle]

Happy days all of you!!!

"Balance your food choices and check what is in the food you eat."
At the above sentence, Which part of speech can I understand it that "what" is used for ? Relative pronoun? or Interrogative pronoun? or for either?

I'm so confused. Please advise me if you can.
Many thanks in advance.

sean kang.

[Conchita]

'What' is a (relative) pronoun in your example.

[Enedle]

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