The correct answer is: D. No error
The sentence “The charges in this hospital are less than the hospital near my house” is grammatically correct. The subject and verb agree in number, and the sentence is complete. The word “less” is used correctly to compare two things, and the preposition “than” is used correctly to introduce the second thing being compared.
The other options are incorrect because they contain grammatical errors. Option A is incorrect because the subject and verb do not agree in number. Option B is incorrect because the word “less” is used incorrectly to compare two things. Option C is incorrect because the preposition “than” is used incorrectly to introduce the second thing being compared.