Two details describe bothe the students in Ms. Odom's class and spelunkers.
1. Explore caves as a habby;
2. must follow all safety rules;
What is spelunkers?
Caving- also known as Spelunking, its is the recreational pastime of exploring wild cave system.
The correct answer would be C
Registration will assure that the colors of a linocut or other relief print will align perfectly.
This document should help you understand more and explain!
http://file.scirp.org/pdf/CE20120200003_78369835.pdf
Hope this helped!
:)