The angle between the hydrogen atoms in water (h2o) is slightly less than expected for a tetrahedral shape. this is because of the
extra electron repulsion from the lone pairs.
atomic radius of the oxygen atom.
additional repulsion of the shared electrons.
extra repulsion of the hydrogen atoms.

I think the correct answer from the choices listed above would be the first option. The angle between the hydrogen atoms in water (H2O) is slightly less than expected for a tetrahedral shape. This is because of the extra electron repulsion from the lone pairs. Hope this helps.

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later