The sentence implies that the candidate's lower grades in her second semester were not typical of her usual performance. The correct word to fill in the blank is one that reflects an irregularity or deviation from the norm. Let's examine each option:
Based on the meanings, anomaly is the correct choice to convey that the dip in grades was unusual.
"Anomaly" fits as an unexpected deviation from the norm.
Context: The word "anomaly" refers to something that deviates from what is expected or considered normal. It is often used to describe an unusual occurrence, condition, or situation that stands out due to its irregularity.
Meaning of "Anomaly": An "anomaly" is something that is different from the norm or expected pattern, often causing surprise or confusion. It can apply to a variety of situations, such as scientific observations, patterns in data, or unexpected events.
Final Thought: The word "anomaly" is fitting when describing anything that doesn't align with the standard or typical, highlighting the uniqueness or irregularity of the situation.