WAEC Mathematics 2019 Objective — Question 57

Question 57 of 145 from the West African Examinations Council (WAEC) Mathematics 2019 Objective paper, with the correct answer and a full explanation.

This is an improvement ____ the last report.

A. over
B. onCorrect
C. in
D. of

Explanation

'Improvement' collocates with 'on' when referring to a particular thing being better than a previous version.

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