Answer:
The population of fish with pelvic spines that arrived in the lake at time B evolved a reduced pelvis over time (beginning at time C).
Explanation:
The fossil record showed that before the time period B, the ancient sticklebacks might have had a huge pelvis which was of no use to them. As a result, through evolution at time B the pelvis reduced in the sticklebacks through natural selection. Having a reduced pelvis must have been advantageous for this ancient stickleback population, just as it is for many current freshwater stickleback populations. Hence, the correct option is B.
Imma say an emu. emus are pretty scary too ngl
I don’t unD3rstand complete my the full question but comment below so I can try and understand for you
I would say the answer is D
