The last two answers are wrong automatically because they make no sense what so ever. The first answer is wrong because putting it in that sentence doesn't sound correct. So the answer would be B. Peter didn't know <em>which</em> was his.
Hope this helps! :)
In the US, Alaska is the farthest state to the North.
Answer:
D. to introduce the bold and courageous soldiers heading into battle
for sure
Explanation: