Synonym selection (vocabulary – meaning of “improvement”): Choose the word that best expresses the meaning. Target word: IMPROVEMENT Instruction: Select the closest synonym signifying positive development or enhancement.

Meaning
Improvement denotes becoming better, an upgrade in quality, performance, or condition.

Option analysis
Enhancement — act of improving or increasing value; best synonym. ✅Decline — movement to worse; antonym. ❌Deterioration — process of becoming worse; antonym. ❌Erosion — gradual wearing away; typically negative. ❌

Example
There was a marked improvement in test scores → a clear enhancement in scores.

Final Answer
Enhancement