The correct answer is D. 23145.
The sentence is “He walked along with me.”. The subject is “he”, the verb is “walked”, the object is “me”, and the prepositional phrase is “along with”. The prepositional phrase modifies the verb “walked”, so it comes after the verb. The object comes after the verb and before the prepositional phrase. Therefore, the correct order of the words is 23145.
Option A, 14523, is incorrect because the object comes before the prepositional phrase.
Option B, 32541, is incorrect because the prepositional phrase comes before the object.
Option C, 23451, is incorrect because the verb comes after the object.