Which of the following is true of socioemotional selectivity theory? multiple choice
a. it was proposed by paul baltes and his colleagues.
b. it emphasizes that the trajectory of motivation for knowledge-related goals declines in adolescence and early adulthood and then peaks during middle and late adulthood.
c. it challenges the stereotype that the majority of older adults are in emotional despair because of their social isolation.
d. it states that adults become less selective about their social networks as they grow older.

Danilo has been working for metropolitan taxi for three months. he expected that his job would be to drive around the city, pick up fares, and drop them off at their desired locations, but in his first few days on the job he realized that the job entails much more. he must keep his taxi cab clean and neat, and some days he will be stationed at the shop and go to people's houses to pick them up and bring them to the local airport. within a few months, he has learned that taxi drivers often express frustration with the people they call "civilians"—that is, non–taxi drivers, whose driving skills they complain about incessantly. in his first few months on the job, describes what danilo is undergoing.