The answer would be a person or noun or pronoun
That's a hint
Answer: Students had a choice between two writing prompts for this contest on immigration policies at the border and in the “Constitution-free zone,” a 100-mile perimeter from land and sea borders where U.S. Border Patrol can search any vehicle, bus, or vessel without a warrant. They could state their positions on the impact of immigration policies on our country’s security and how we determine who is welcome to live here. Or they could write about a time when someone made an unfair assumption about them, just as Border Patrol agents have made warrantless searches of Greyhound passengers based simply on race and clothing.
Explanation:
i believe the answer is b) it frustrates the reader, knowing that he died in vain.
not 100% sure but i think this is the one please correct me if i'm wrong.
A complete sentence contains a subject and verb. So this is not a complete sentence.