Answer: 1. Investment; 2. Consumption; 3. Investment; 4. Consumption
Explanation: Consumption is defined as trading money for good or services as an individual as well as to absorb information, especially through a media form. It refers to expenditure on consumer goods that are not used in the production of other goods and services.
Investment on the other hand refers to expenditure on capital goods or assets that can be used to produce other goods and services thus investment spending stimulates greater production in an economy than consumption spending does.
Private consumption spending in this case would include people buying newspapers and firms buying soft drinks for a holiday party. Private investment spending includes laundromats buying washing machines and firms buying automobile for delivery services.