Re-order paragraphs

Instruction:
The text boxes in the left panel have been placed in a random order. Restore the original order by dragging the text boxes from the left panel to the right panel.
Heart attack
d) The clot in blood vessels will block blood flow.
a) When the clot is formed, it will stay in the blood vessels.
b) Without the normal blood flow, it will cause muscle contraction.
c) Heart attack is the caused by the sudden blockage of a coronary artery by a blood clot.
A
0/0
AnswersDiscussion
Frequency:
Source:
Order: