D is wrong because the issue to rectify the unfair result. In (D) the Corporation attempts to deny the rebate to all people -- those for whom the coupon expires and didn't expire. This does not rectify the unfair result (for whom the coupon expired), so it cannot be (D).

(C) Scientific fraud needs digi images

Negation: Sci fraud does not need digi images

Discernable = noticeable, perceivable

When considering what the author would most likely agree to, if the author's opinion is not explicitly stated, then consider what is factual information presented in the debate. Particularly for this one, there is a continual refinement of ideas regarding how and if volcanoes affect climate.

Good! The first and last must be same subject.

Increase of a -->x>y>z>f --> further increase a

I thought that the training is continually attained and new training is added on -- could you help me with this?

(C)'s "influence" does not make Arg's desires and choice as the SOLE influencing agent.

For (E), I interpreted it as all available choices, even those that the gods may not disclose... Could you walk me out of this thought process?