The first alternative is correct (A).
Erik Erikson was an American psychoanalyst known for his generally accepted theory of personality development. Erikison developed a theory of development that covers the whole life cycle from infancy to old age, divided into eight stages.
In Erikson's view, each person experiences times of inevitable crises, which are part of a natural and necessary process, the basis for progress. According to the description, the Manche problem fits into Stage 6 of Erikson's conception, which occurs when the individual may feel isolated. If fear prevents them from exercising their obligations and developing relationships, they run the risk of social isolation.