The correct answer is B. The ox said to the dog, “Do not sit here.”
The other options are incorrect because they do not use the correct verb tense. The sentence “The ox asked the dog not to sit there” is in the past tense, so the verb in the direct quote should also be in the past tense. Option A, “The ox said to the dog, “Not to sit here,”” uses the infinitive form of the verb, which is not correct in this context. Option C, “The ox said to the dog, “Does not sit here,”” uses the present tense, which is not consistent with the tense of the rest of the sentence. Option D, “The ox said to the dog, “Did not sit here,”” is also incorrect because it uses the past participle form of the verb, which is not used in direct quotes.
In conclusion, the correct answer is B. The ox said to the dog, “Do not sit here.”