CR question help

<p>While traveling near the Sun, the comet Hale-Bopp
produced a ------- amount of dust, much more than the
comets Halley or Hyakutake.
(A) voracious (B) disposable (C) redundant
(D) superficial (E) prodigious </p>

<p>the correct answer is E, but why C is wrong</p>

<p>thanks in advance</p>

<p>Redundant means repetitive (no longer needed or useful)- why would that be correct? Prodigious means extraordinary in size, amount, etc., so it makes sense in this sentence.</p>