Hiexperts..pls ans this ques .( if u feel.ques is wrong pls correct and tell the right ans )

Dear Student,
Assuming The question is wrong here
It should be P(E) +P(E') =q
Let E be any event and E' be its complement.

We know that P(E') = 1 – P(E)

⇒ P(E) + P(E') = 1

⇒ q = 1

∴ option (d) is correct.
Regards