I think it is connotation, sorry if i am wrong, hope this helps
You technically shouldn't postpone the counterclaim and only introduce it in a conclusion or ending point. That wouldn't be effective let alone a good choice if you were supposedly suppose to make someone actually grasp your argument. Besides... A counterclaim is usually presented in the 2 - 3 paragraph and mentioned within a thesis. D is out.
There are various ways to present a counterclaim... I am unsure of what the correct answer would be. I am leaning towards A or B... It's a counterclaim after all.
Answer:
The best way to improve is to practice loads. You can do this by:
Recording yourself on a phone or any other device
Saying it to a family member, guardian or friend
Making sure that your confident in what your saying. So make sure you know you lines/speech properly.
Stand in front if a mirror and rehearse.
Hope these help!!
Semi-colon, your answer is a semi-colon