TIP: The label (top right) marked in red shows the activity type.

Hover your mouse (touch on smart phones) over the label to get more help.

Select an option (A or B or C).

The area associated with the option you selected gets highlighted on the image. 

Type your response in the text box.

Click on the "Check Answer" button.

The correct answer is indicated with a green icon (✔) and the incorrect answer is with a red icon (✖).