Answer fast! 30 points and will mark brainliest! how can these forelimbs explain how life changes over time? a. the illustrations show the vestigial structures of four different species that once had a function in an ancestral organism but no longer have a function today. b. these illustrations show the homologous forelimbs of four different species with enough similarities to suggest all had a common ancestor. c. these illustrations show the progressive development of the forelimb in a species over time, one example of how life has changed over time. d. these illustrations show the variety of bone structures that exist among different species and how life has changed over time as new species develop.

Hello there. I just took the test and the answer is in fact B. "these illustrations show the homologous forelimbs of four different species with enough similarities to suggest all had a common ancestor"

Explanation: Common descent is a concept that is effect of speciation which is related to an evolutionary process that was first put into thought by Charles Darwin, the naturalist who came up with the idea of natural selection. Hope this helps and have a great day!

(i can't select because there is no options but, i will answer) using evidence effectively. most of the assignments you will do in university will ask you to make an argument, to take a stance, or to prove a hypothesis. the best way to do this is to research the topic, develop a thesis statement, hypothesis, or claim and then use evidence to support this claim.

the author motivation is to show the power of animal-human relationships.