5. The best arrangement is __ (Must)/(1)-(the students)/(2)-(on)/(3)-(come)/(4)(to)/(5)(school)/(6)-(time)/(7) a 2-3-4-5-1-6-7 b. 2-1-3-4-5-6-7 c 2-1-4-5-6-3-7 d 2-1-4-5-3-6-7

The correct answer is **d. 2-1-4-5-3-6-7**The correct sentence structure is: "The students must come to school on time."Let's break down why this is the correct order:* **2-1:** "The students" (subject) and "must" (auxiliary verb) go together.* **4-5:** "come to" (verb phrase) forms a unit.* **3:** "on" is a preposition that modifies "time."* **6-7:** "school" (object) and "time" (adverbial phrase) complete the sentence.Therefore, the logical and grammatically correct arrangement of the words is 2-1-4-5-3-6-7.