Answer:
E) Matched pairs
Explanation:
The experiment is a matched pair design. A matched pair design is a type of design applied when there a only two treatment conditions, in this design, the subjects are grouped into pairs and are then matched to the treatment condition. For example, the subjects are matched to any of the two volume levels.
The European expeditions to gain control of their holy sites were known as the Crusades.
<span>common fires and floods should be treated as national natural disasters and nature will reap rewards in the future also natural disasters should remind us of the need to design the in tune with nature and with common sense, avoiding encroachments in areas which is effected on regular basis.</span>