During which period did eurypterids swim the oceans and the first jawed fish and vascular plants evolve?

The correct answer of the given question above is the first option. The period in which Euripides swim the oceans and the first jawed fish and vascular plants evolve is in the Silurian Period. This is the period that occurred from 443 million to 416 million years ago and was the third period of the Paleozoic Era. Hope this answer helps.

the correct answer is:

a population changes in response to a change in the environment.