Four situations are described. i. Children who watch more television, play more video games.
ii. Children who increase their physical activity, increase their total
number of calories burned.
iii. Children who get more questions correct on a test, get a better
grade on the test.
iv. The warmer the weather, the more children ride their bicycles.
Which situation(s) does NOT show causation?
A. iv only
B. i and iv only
C. ii, iii, and iv only
D. ii and iii only

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Which option identifies how kevin should proceed in the following scenario? four years ago kevin designed an mp3 player for young children. now that technology has changed, he would like to update his design to ensure that it encompasses cutting-edge techniques. by creating a third-angle projection of his ideas by designing an isometric projection of his new ideas by referring to past designs and illustrations of his original model by conferring with engineers who have improved upon similar devices