The answer is: adapt to one's environment.
According to piaget, organisms with low intelligence tend to only recognize low variety way of living and unable to adapt to extreme change in environment. More often than not, this would make such organisms much more likely to extinct.
Intelligent organisms on the other hand, can adapt to extreme changes and had a very high likelihood to survive to the next generation. (humans for example can live in both cold north pole and hot dessert while no other organisms able to live in two completely different climate, indicating how good we are in adapting to our environment)
