I think A)People had more time for face to face contact
Producers want to charge prices that at least will return all their costs: the cost of production, compensation for the time they and their employees spend on the production, and the cost of material, but in an ideal case they want to charge more so that they can earn profits.
Answer:
B. hold clear expectations about the way their grandchildren should behave.
Explanation:
The role of grandparents in the studied to have a significant impact on the development of their grandchildren and vice-versa. While talking about companion grandparents they presented their relationship as connected, loving, and playful. For most people, they fit the ideal grandparenting profile but they not get involved with parenting and disciplining of their grandchildren.
Answer: D. The Demographic transition
Explanation: Demographic transition explains the association between population growth and economic development. It explains the high infant mortality and high birth rate associated with non-industrial, low technology and many developing countries and the low infant mortality, low birth rate commonly found in industrial, high technology and high level of education found in developed countries.
It is an historical overview which shows high birth rate in low industrial and developing countries and low birth rate in industrial and developed countries.