The type of context clues in the sentence that can be used to determine the meaning of "guile" is an antonym, as further explained below.
We call context clues the pieces of information given by authors in their text that help us figure out the meaning of new or unfamiliar words. Examples of context clues are:
In the sentence "Andrea's opponent was honest and straightforward, but Andrea used her guile to win the contest," we can figure out the meaning of "guile" by paying attention to an antonym context clue.
Antonyms are words that have opposite meanings and, in the sentence, "guile" has the opposite meaning of "honest" and "straightforward," which is revealed by the use of "but".
With the information above in mind, we can conclude that the answer provided is correct.
The missing sentence is the following:
Andrea's opponent was honest and straightforward, but Andrea used her guile to win the contest.
Learn more about context clues here:
https://brainly.com/question/2437273
#SPJ1