Question #N884

The two friends debated the merits of their favorite video games. One, a fan of fast-paced shooters, argued that the game’s quick action and complex controls made it the most exciting. The other, a lover of intricate strategy games, argued that their game’s slow-paced thinking and in-depth planning made it more rewarding. What is the best way to correct the sentence, “The other, a lover of intricate strategy games, argued that their game’s slow-paced thinking and in-depth planning made it more rewarding”?

Which choice corrects the underlined portion of the sentence?
A. their game’s slow-paced thinking and in-depth planning
B. his game’s slow-paced thinking and in-depth planning
C. their game’s slow-paced thinking and in-depth planning,
D. their game’s slow-paced thinking, and in-depth planning,