From the following responses, please select the statement that is grammatically incorrect. A. I forgot my umbrella today and became sopping wet on my way to work. B. Because I forgot my umbrella today, I became sopping wet on my way to work. C. Today I forgot my umbrella, on my way to work I became sopping wet. D. Having forgotten my umbrella today, I became sopping wet on my way to work. E. I forgot my umbrella today; hence, on my way to work I became sopping wet.

Answer C is grammatically incorrect because it has two clauses (two complete ideas) separated by a comma, but with no grammatical word to connect the two ideas. A comma denotes a pause in thought, and usually a grammatical word, called a connector, is used after it to connect the two clauses. If a connector is not used, a different punctuation mark must be used.

To explain this, we can look at each answer and see why they are correct. Answer A is correct because it uses and as a conjunction, which does not need a comma since it adds on to the first clause.

Answer B is correct because it uses the word because denoting the reason why the person became sopping went on their way to work. Because is a type of connector called an adverb connector. It can be used at the beginning of the sentence with a comma in the middle of the two clauses, or in the middle of the two clauses without a coma.

Answer D is correct because the word Having is a reduced form of a similar adverb clause using an adverb connector which in this case could be the word since. Example: 'Since I had forgotten...' can be reduced to 'Having forgotten...' This follows the same comma rule as answer B.

Answer E is correct because it uses a semi-colon to separate the two clauses and a transition word followed by a comma (hence,).

In summation, answer C has no connector, and therefore should not have a comma in between the two clauses. It could be correct if we replaced the comma with a semi-colon or a period.