Iwill give brainliest for first answer

look at this picture of a trilobite. these animals were once present in the ocean but now they are completely extinct. what is a likely cause of trilobite extinction?

a. they failed to develop vestigial organs that would have them survive.

b. they were no longer able to acquire the necessary characteristics for survival in a changing environment.

c. something changed to limit and finally abolish their success in this environment.

d. something changed that brought these creatures onto land in a slightly different form.