When you see something like this |-4| in the end 9 times out of 10 they want you to change it from a negative to a positive. So what you will end up getting is
a.)4<3
b.)4<3
c.)3<-4
d.)3<4
After you end up getting it all like this you'll see 3 of them could be the answer. You know that this symbol (<) means less than so you need to find the answer where A is less than B (A<B). At this point its all a matter of reasoning and deduction A and B are the same 4<3 and since 4 is not less than 3 it's incorrect, and C is wrong because 3 is not less than -4 its greater than -4 therefore it is incorrect.
So you're correct answer is D because 3 is less than 4.