Here are the answers to your questions:
Question 1 A) The adjective most likely describing the TV show is: cómico (funny).
Question 2 A) The Spanish verb you would use to say that a TV show lasts a certain amount of time is: durar.
Question 3 A) One principal theme of Emilia Pardo Bazán's work is: naturalism.
Question 4 A) One major difference between Spanish language telenovelas and U.S. soap operas is: U.S. soap operas have stories that continue indefinitely; telenovelas are complete stories.
Question 5 A) If you wanted to describe a TV show as childish, the word you would use is: infantil.