A student writes about a process: 'The mixture heated to 200°C.' What is wrong?
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A
The passive auxiliary verb 'is' is missing: it should be 'The mixture is heated to 200°C.'
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B
The temperature should not be mentioned in a process description.
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C
The student should use active voice: 'Workers heat the mixture to 200°C.'
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D
Nothing is wrong; the sentence is grammatically correct.