(a) what are some examples of types of investments on the part of manufacturers that result in growth? (b) how does this improve a nation's standard of living?

For good growth you need good soil and good climate such as enough rain and sunlight.This would improve our nation by more food supply stronger nation no complaints of our people

Investment in machinery and equipment.

Explanation:

a) Investment is an important determinant of economic growth. Increasing the level of investment in machinery and equipment increases the installed capital and thus the wealth of a country. b) These investments help to increase a country's wealth by increasing income, that is, it increases employment with better wages. On the other hand, it increases the country's capacity and production, thus increasing its ability to generate wealth and improving people's quality of life.

if im not mistaken its a. collective emotional arousal