Based on the arrangement of the electric field lines in the diagram, what are the charges and how are they interacting?

a
They are like charges and they are repelling.
b
They are opposite charges and they are attracting.
c
They are like charges and they are attracting.
d
They are opposite charges and they are repelling.

d. They are opposite charges and they are repelling.

Based on the arrangement of the electric field lines in the diagram, the charges are opposite charges and they are attracting. This is indicated by the field lines that are directed towards each other, which suggests that the positive and negative charges are being pulled towards one another. Therefore, option b is the correct answer.