According to vsepr theory, the bond angle in h2se would be predicted to be:

109.5°

Explanation:

According to vsepr theory, the bond angle is affected by many factors. Some of these factors are the presence of the lone pairs of electrons. Some, are simply the size of the electron cloud of the atom. The molecule  H₂Se is synonymous with the water molecule,H₂O. Water has two LONE PAIRS of electrons on the oxygen atom. This increases the repulsion of the electron clouds giving the molecule a V-shape of 109.5°. Thus, H₂Se has and angle of 109.5° as water molecule

a is the correct answer