In bronfenbrenner's ecological-systems model, family and peers are part of a person's
a) microsystem
b) exosystem
c) macrosystem
d) social system

microsystem

Explanation:

Microsystem -

Urie Bronfenbrenner in the year 1979 , developed the most famous ecological systems theory , which helps to explain the external factors which determines the growth and development of a child.

According to microsystem , the child development is best analysed by studying the nearby environment i.e. the people surrounding the child .

As the environment where the child is living , plays a major role in the process of development.

Hence, from the given options the correct term is microsystem.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.

answer; i do believe that the answer is (c) electrolyte imbalance or (d) cessation of menstrual cycle; plz check first good luck