Yes, (C) is correct. Omitting 'in writing' would change the meaning: verbal requests are not allowed, only written ones.
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ferdisYes, (C) is correct.
Omitting 'in writing' would change the meaning: verbal requests are not allowed, only written ones.
Thanks, Ferdis.
Is it the same to say "Written requests for vacation time must be submitted at least two weeks in advance?"
Btw, is "time" in the context optional? Thanks.