The constant theme between Good and evil, but the best theme is the Ram Sethu.
I honestly think that the answer is A, but I might be wrong. Just to be safe, you may want to check with someone else. Hope this helps.
C. is true
A. is incorrect because you are supposed to have at least two strong reasons for your readers to agree with your claim.
B. is incorrect because ineffective support should be eliminated in the revision process of writing.
D. is incorrect (duh!) because you should do more than the bear minimum.