Normally, subjects should be informed of the purpose of the study ...

[Wadzanai]

Normally, subjects should be informed of the purpose of the study
 
  a. after their participation in the study.
  b. after the study is completed and written up.
  c. before they take part in the study.
  d. during their participation in the study.

Question 2

Describe techniques that help teachers capture and maintain their students' attention.
 
  What will be an ideal response?

[Madisongo23]

Answer to Question 1

C

Answer to Question 2

Attention is usually captured by sudden, unpredictable changes in the environment.
To maintain students' attention, emphasize the usefulness of learning new ideas by relating the information to their present and future lives.

[Wadzanai]

Thanks for the timely response, appreciate it

[triiciiaa]

Gracias!