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The intended meaning is that moisture will damage the prints if the parcel is not sealed. Which sentence contains an error in the unless-versus-if-not contrast?

Unless the path dries by noon, the race will use the lower route.
Unless you do not seal the parcel, moisture will damage the prints.Ճիշտ պատասխան
The picnic will proceed unless the ranger closes the meadow.
Unless the clinic calls first, I will arrive at my booked time.

Բացատրություն

The parcel sentence is erroneous because unless already supplies the meaning if not, so adding do not reverses the intended condition. The clause should use an affirmative present verb after unless.

Բացատրություն

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