(a).The field lines showed in figure (a) do not represent electrostatic field lines because field lines must be normal to the surface of the conductor.

(b).The held lines showed in figure (b) do not represent electrostatic field lines because the held lines cannot emerge from a negative charge and cannot terminate at a positive charge.

(c).The field lines showed in figure (c) represent electrostatic field lines. This is because the field

lines emerge from the positive charges and repel each other.

(d).The field lines showed in figure (d) do not represent electrostatic field lines because the field

lines should not intersect each other.

(e).The field lines showed in figure (e) do not represent electrostatic field lines because closed

loops are not formed in the area between the field lines.