Correct answer is: Seth spent 0.75 hours per one episode.
Solution:-
Given that Seth watched 14 episodes in 10.5 hours.
And he spent the same amount of time watching each episode.
Let x be that same amount which Seth spent for each episode.
Then time taken for watching 14 episodes = x+x+..14 times
= 14x
But given 14x=10.5 hours
hours per each episode.