Hi, you've asked an incomplete question. However, I assumed know a word that likely completes the sentence.
Answer:
100%
Step-by-step explanation:
|n other words, the complete sentence could read,
"After studying all night, Caitlyn was able to describe the process with 100% accuracy."
Often times in English sentences, accuracy is quantified in percentage, from 0% to 100%. It is based on this background that we could reach the conclusion that the best word that fills the sentence blank is "100%".