Answer:
B (ii and iii)
Explanation:
i is not true, which rules out A and C. (-3.4 is not less than -5.2)
ii IS true (-4.3 is indeed greater than -4.7)
iii IS true (-1.8 is also less than -0.9)
iv is not true, which rules out D (-4.7 is NOT greater than -1.8)
If you struggle with these problem drawing or mentally visualizing a number line usually helps :)
This leaves you with the answer of B!