The options are missing from the provided text. Generally, to determine if a molecule is coplanar, one must examine the hybridisation of the atoms present. Molecules composed entirely of $sp^2$ and $sp$ hybridised atoms (like benzene or ethene) tend to be planar, provided there is no steric hindrance that forces the molecule out of the plane. The presence of any $sp^3$ hybridised carbon (like in a methyl group) usually makes the molecule non-planar.