How did the scientist' discovery affect their idea about dinosaurs and chickens

the best asnwer is b "les encantan los juguetes nuevos" because you are talking about them

i would have to say "a" or "d".

sentence lenght varies according to word choice.you select which word to use and that will require to use other expressions that collocate with the word chosen.sentence length will vary   according to the choice of words you make to express your ideas.