Iwould like to know if this question is correct. if is not correct how can i solve it?

You know how the first one if filled up like the objects do the same but with the other categories

The answer is probably c. xylem

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf