Correct the sentence: ‘He is wet from head to foot.’

The sentence 'He is wet from head to foot' is grammatically correct and requires No correction needed. The idiom 'from head to foot' is a well-established and commonly used phrase in English, meaning completely or entirely, especially when referring to being covered or affected by something from the top of one's head to the bottom of one's feet.

Let's examine the other options:

• A: He is wet from head to toe is also a correct and very common idiom with the same meaning. While correct, it's not a "correction" for the original sentence, which is already valid.
• B: He is wet from head to feet is incorrect. 'Feet' is plural, but the idiom uses the singular 'foot' to denote the entire length.
• C: He is wet head to foot omits the crucial preposition 'from', making the phrase less idiomatic and grammatically awkward in this context.

Both 'from head to foot' and 'from head to toe' are acceptable and convey the same meaning of complete coverage. Since the original sentence uses a valid idiom, no correction is necessary.