The correct answer is: No sooner had the jeep arrived at the station than a young police officer jumped out of it.
The sentence is in the past perfect tense, which is used to talk about an action that happened before another action in the past. In this case, the first action is “the jeep arrived at the station,” and the second action is “a young police officer jumped out of it.” The past perfect tense is formed with the past participle of the verb (in this case, “arrived”) and the auxiliary verb “had.”
The word “arrives” is in the present tense, which is not correct for this sentence. The present tense is used to talk about actions that happen regularly or repeatedly, or actions that are happening now. In this case, the action of the jeep arriving at the station happened once, in the past.
The word “than” is a conjunction that is used to connect two independent clauses. In this case, the two independent clauses are “the jeep arrived at the station” and “a young police officer jumped out of it.” The word “than” is used to show that the second action happened after the first action.
The word “jumped” is the past tense of the verb “jump.” The past tense is used to talk about actions that happened in the past. In this case, the action of the police officer jumping out of the jeep happened in the past.
The word “out” is a preposition that is used to show the direction of an action. In this case, the action of the police officer jumping out of the jeep is directed away from the jeep.
The word “it” is a pronoun that refers to the jeep. In this case, the jeep is the object of the verb “jumped.”
Therefore, the correct sentence is: No sooner had the jeep arrived at the station than a young police officer jumped out of it.