A teacher designs a test to find out the cause of the poor grades of her learners through a/an

A teacher designs a test to find out the cause of the poor grades of h

1.	A teacher designs a test to find out the cause of the poor grades of her learners through a/an
A.	Diagnostic test
B.	Proficiency test
C.	Achievement test
D.	Aptitude test
Answer» B. Proficiency test