Which of the following is true of services?

a. they are objects that have an economic value to others
b. markets for their exchange first arose in the 19th century
c. they have become more important in postindustrial society
d. they do not include complex activities

Bonus question: according to wikipedia, in chinese philosophy yin and yang "describes how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent." what are some examples from the story that amy tan may have intentionally incorporated elements of yin and yang philosophy into this story? select 2.

Why did the settlement of east texas stop in the late 1710s

The work which speaks of the people’s right to select and remove rulers entitled “the tenure of king’s and magistrates” was written by