To only allow through certain items, and block the rest.
The answer is A.
Rings surround Jupiter, Saturn, Uranus, and Neptune. These planets are all large planets.
That would be a science experiment so you can predict what would happen when performing the experiment
<span />
accelerate to the left: bottom right box
middle right box
accelerate to the right: bottom left box
top right box
top left box
no acceleration; middle right box
Because it’s a 50 % chance