<span>West Nile virus is mostly spread through infected mosquitoes, which is likely how these other patients were infected. Other possible but unlikely ways include blood transfusions and organ transplants, so the physician would likely be able to track down whether Peter donated any blood during his recent hospital visits.</span>
The answer to this question is b
There was two of the same question, but here is the answer again with a little more depth.
D - spine alignment and foot size.
It was only the late Australopiths that had an S-shaped spine. This allowed for them to be bipedal, that is, the ability to walk on two legs as we do. This is because the S-shaped spine allowed them to balance when they were standing. The late Australopiths also have shorter and less flexible toes. These smaller, but sturdier feet made pushing off the ground much easier - aiding in their bipedalism.
