Fact 1: Birds evolved from a group of bipedal dinosaurs called theropods. Fact 2: Dromaeosaurs are part of the theropod group of dinosaurs. Given the two facts above, what did birds evolve from?

OPTIONS: a. chickens b. insects c. fur and fat d. dromaeosaurs e. beaks f. feathers g. animals h. warm-blooded
The answer is:
d.