The Near Earth Asteroid Rendezvous (NEAR) spacecraft will orbit the asteroid Eros for a year, slowly moving closer to the surface of the object to make ever more precise measurements that scientists hope will enable them to understand how the solar system formed some four billion years ago.
to make ever more precise measurements that scientists hope will enable them to
to make ever more and more precise measurements, which scientists are hoping to enable them
for making ever more precise measurements, and scientists hope that they will be able to
with the purpose of making more precise measurements than ever, and which scientists hope will enable them to
in order to make more precise measurements than it ever did, and scientists are hoping they will be able to
首先我觉得to make 比for making好，to make表目的，for making表用途，但是不太影响 第二，A中to make ever more precise measurements that scientists hope will enable them to，that引导的不是定语从句，而是同位语从句，但是 that scientists hope will enable them to做measurements的同位语很ridiculous 所以还是C好，they指代很清楚，就近指代scientists
