Help needed ASAP, I will mark your answer as brainliest.

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   

Just took the quiz on edgenuity and the correct answer is "c.  4.54 x  10–12  j"

D. h2o + h2o > h3o + oh- confirmed.