Current Loop as a Magnetic Dipole question from JEE Main 2017 (9 Apr, Shift 1)

Answer: (c)

1. Stable equilibrium: $\vec m$ parallel to $\vec B$ ($U = -mB$ is minimum).
2. $\vec B$ is along $+Z$, so the loop must lie in the XY plane with current anticlockwise seen from $+Z$.
3. In (c) the current goes $a \to b \to c \to d$, i.e. from $+X$ towards $+Y$: anticlockwise from above, so $\vec m$ is along $+Z$.
4. In (a), (b) $\vec m \perp \vec B$ and in (d) $\vec m$ is along $-Z$ (unstable).
5. So the answer is (c).