Which word signal that this is a procedural text?

Read the excerpt from "How to Think Like a Researcher," a chapter from How to Find Out Anything.

Whether you’re nosing around your local town library to find a biography of your favorite writer or downloading giant data sets from a U.S. government agency or from a university in a remote country, the principles of research are the same. By mastering the research process and undertaking it in the spirit of adventure and discovery, you’ll soon realize that it is indeed possible to find out anything.

Which word helps signal that this is a procedural text?

a.) whether

b.) adventure  

c.) process  

d.) possible

they are most likely about to fight in the battle of gaul