The context clues that help identify the meaning of the word "entails" in the second sentence are:
-
process: This word indicates that "entails" is related to a set of steps or actions involved in the overall task of harvesting cotton.
-
using: This word suggests that what follows is a description of the actions taken as part of that process, implying that "entails" refers to what is involved in or required for the process.
So the correct responses are process and using.