In the following characteristics of an evaluation procedure, identify those which describe formative assessment. Select from the code to indicate your answer.

(a) Evaluation is a post instructional event.

(b) Evaluation occurs during instruction.

(c) Evaluation is carried out by policy makers.

(d) Evaluation takes place periodically.

(e) The aim of evaluation is to improve the process of teaching.

(f) Evaluation is used on participation of students and teachers.