Which sentence has an unnecessary comma? Our little black mutt, Cassie, suddenly became ill with pneumonia.
The dog's little legs, began to swell up and become difficult to move
Most people associate pneumonia with humans, but animals can catch it
too
D)
After a week of lying in her little bed, our dog began to feel a bit better,

How is the city of savannah related to the union strategy of a full blockade of confederate ports? a) savannah was the last port needed to be secured in order to totally blockade the coast of georgia. b) savannah was the least significant city in georgia, and the union strategy centered on securing atlanta and capturing the tennessee river. c) savannah was the least significant city in georgia, and the union strategy centered on securing atlanta and capturing the chattahoochee river. d) savannah was the most significant port in georgia, and the union strategy centered on securing bases at savannah and the outlying islands to fully blockade georgia.