Which statement explains why a molecule of ch4 is nonpolar?
(1) the bonds between the atoms in a ch4 molecule are polar.
(2) the bonds between the atoms in a ch4 molecule are ionic.
(3) the geometric shape of a ch4 molecule distributes the charges symmetrically.
(4) the geometric shape of a ch4 molecule distributes the charges asymmetrically.

The answer is the option (3) The geometric shape of a CH4 molecule distributes the charges geometrically. the CH4 is a tetrahedral with the Carbon atom in the center and the four H atoms in the vertices of the tetrahedral. The C-H bond angles are all identical which makes the molecule perfectly symmetrical and so any dipolar moment will cancel making the molecule non polar.

Temperature and pressure