After a number of failed attempts, Nevada voters finally amended our state constitution in 2014 to establish

Nevada has seen many political parties come and go over its 152-year history ... Democratic and Republican—split the State's constitutional and federal offices, ... After years of playing catch-up, Republicans finally seized the lead in voter ... 1914—the first election after the 17th Amendment established direct elections.

A.

Explanation:

Index fossils should be easily identifiable in appearance, and also geographically widespread so we can use them to "time-match" them to layers of earth that were formed around the same time, but separated at huge differences.

They kinda serve as mother nature's timestamps, so it makes sense that you want them to be easy to tell apart from other fossils from other time periods.