It is the sixth stage of Erik Erikson's theory of psychosocial development. It takes place in adult between the age of 19 to 40 years. During this period of life, most of the conflict centers on forming, loving relationship, intimate with other people. Success results in fulfilling relationship and failure result in isolation and feeling of loneliness.
So, in order to deal with such problem the adult must maintain close and intimate relationship with other people in order to avoid loneliness.
The crabs with white shells. The next generation of crabs will be white shelled.
Explanation:
The crabs with white shells are more likely to survive because they blend in with the white sand more than the ones with brown shells making it easier to hide from predators and also makes it a desired trait.