Which molecule is nonpolar and has a symmetrical shape hcl?

HCl is considered as polar molecule and that is incorrect answer, The choices provided are A) HCl, B) CH₄, C) H₂O, D) NH₃

And the correct answer is : B) CH₄

In case of H₂O and NH₃ the high difference in electronegativity between nitrogen or oxygen and hydrogen make the bonds acquire partial charges and become polar while in case of CH₄ the difference in electronegativity between carbon and hydrogen is only 0.4 so it considered as non-polar bond

also carbon connected from all directions with Hydrogens