A group leader's ability to encourage critical thinking can motivate their group-mates to engage their thinking skills and frontal cortex of the brain. As for the group's benefit, you will produce more thought out ideas, and ideas of higher levels of thought.
<span>Restrictive clauses limit the possible meaning of a preceding subject. :)</span>
Segregation; the two different races are being segregated (separated) from each other. Hope this helps :)
It’s A because it’s using characterized