The best answer for the molecular shape of BeH2 is c linear.
Explanation: Beryllium hydride (BeH2) is a molecular compound where beryllium (Be) is bonded to two hydrogen (H) atoms. The beryllium atom in BeH2 has an electron configuration of 1s2 2s2, but in this case, it undergoes hybridization to form sp3 hybridized orbitals.
Due to this hybridization, BeH2 adopts a linear shape with a bond angle of 180 degrees between the hydrogen atoms. This geometry minimizes the repulsion between the electron pairs surrounding the beryllium atom, resulting in a linear configuration. Other options like seesaw, bent, or T-shaped do not apply to BeH2 in this instance, as they would indicate a different arrangement of electron pairs which is not consistent with the actual geometry of this molecule.