37.
Your Answer is
Correct Answer is A
Explanation
Here, the word order of item A is correct in the expression "a waiter serves hot food and walks through the carriage".
Item B: The mistake is to use parallel sentences to express, which is not concise enough.
Item C: The logical subject of the fault is hot meals.
Item D: The error is separated by a comma between came through and served, and the sentence structure is wrong.