Anna's infection affected her body cells, it impaired the body's function and all organs. The urinary tract infection resulted to a septic shock that caused multiple organ failures. In addition to this, bacteria is yet to be identified so there is no actual reason stated for the cause of death.
Answer : Option C) vestigial structures.
Explanation : In the example of whales which is displaying the remnants of the pelvis and femur bones it seems to be the example of vestigial structures.
As vestigial structures are those anatomical feature which no longer seems to have a purpose in the current form of an organism of the given species.
