Look not 100% sure but I'm pretty sure its based off your opinions which one you would thing is better. So like What they should have said is 'Do you think vounteering with an group in you community or a national group is better? Explain why you think this' Thats what they should have said.
Octopuses can change their color of the skin by the blink of an eye. It depends on what kind of surroundings they are in. If in the ocean, then ocean blue, etc..
