Why is a standardized container more efficient than other types of goods transport? They come in several standard sizes they are designed primarily for sea voyages they can be used in different shipping partners they are flexible

C. They can be used by different shipping partners.

Explanation:

A shipping container refers to a metal container made from steel and having the ability or strength to withstand all external factors during shipment or storage of materials. It is an essential part of transportation of goods or materials from one location to another, thereby boosting trade between countries.

The various types of shipping containers are, dry storage container, open-side storage container, ISO Reefer container, flat rack container, tunnel container, open top container, double doors container, thermal containers, intermodal freight container etc.

A standardized container is more efficient than other types of goods transport because they can be used by different shipping partners.

The two standard sizes of shipping containers are 20ft (6.06m) and 40ft (12.2m): which has a width of 8ft (2.43m) and height of 8.5ft (2.59m).

total spending needs to increase by $0.4 billion

Explanation:

Calculation to determine how much total spending needs to increase or decrease

Using this formula

Increase or Decrease in total spending=Equilibrium income/Spending multiplier

Let plug in the formula

Increase or Decrease in total spending=$2 billion/5

Increase or Decrease in total spending=$0.4 billion

Therefore If the spending multiplier equals 5 and equilibrium income is $2 billion below potential GDP, then TOTAL SPENDING NEEDS TO INCREASE BY $0.4 BILLION to reach the potential real GDP level.