a lot of you seem pretty certain it was 'A' for Q 8.
for A- wasn't getting into the war in the first place enough to "strengthen links with Britain"? To me conscription is much more of a domestic issue than one of strengthening alliances. And besides, the conscription debate only really heated up post-ANZAC-gallipoli fiasco... Wasn't it at this point that Australians were quite dissapointed with Britain and her commanders for stuffing it up for Australian soldiers at Gallipoli? So they were starting to get over Britain.
I chose B and I'm yet to be entirely convinced that it doesn't explain why many christians might support conscription. Like, the idea of 'equality of sacrifice', and supporting our christian brothers at war, holding the forst at gallipoli. I've seen posters that say "Come help us keep this hill" with a picture of a bronzed Aussie in Gallipoli. And of course the majority of soldiers were christians so... I'm losing hope though, it seems like the Board wanted us to answer 'a'.
I believe both A and B are correct. Though C and D are almost definitely wrong in my opinion. The two main problems with the question are the vagueness of "many Christians", they should have given a denomination or something, and the fact that they are asking us for underlying motives that we can't know for sure and are indeed very debatable, even among historians.