Should a student of lifespan development ask, which approach to lifespan development is the right one?
a. no, because one approach is as good as another approach.
b. yes, because the approaches are really different and they cannot be reconciled.
c. no, because the perspectives should be regarded as complementary.
d. yes, because five approaches deal with different aspects of development.

Letter "C" is correct. The perspectives should, indeed, be regarded as complementary to each other, once there is, to mention, several contributions given between the approaches leading to a better understanding of life expectancy and its development, through intervention methods of different sciences such as Physycs, Psychology and Pedagogy. Of course, governamental mainstream health policies are needed to make it available to most of the people.

Explanation:  Desirable outcomes manifested along human life, such as stable identity, well-being, cognitive and physical health plus behavioral competencies (like functional beliefs and assertiveness) are a consequence of the development and consistant implementation of good lifespan pratics.

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations. click to let others know, how is it

world bank is the correct answer.