The correct answer is: C. Forced saving
Forced saving is a type of saving that takes place when people are forced to save money because they do not have enough money to spend on consumption. This can happen when there is a recession or a depression, when prices are rising rapidly, or when wages are falling. Forced saving can also happen when the government imposes taxes or regulations that make it difficult or expensive to spend money.
Compulsory saving is a type of saving that is required by law. For example, many countries have mandatory pension schemes, which require workers to contribute a certain percentage of their income to a pension fund. This type of saving is not considered to be forced saving, because people choose to participate in the pension scheme.
Consumer saving is the saving that is done by individuals and households. This type of saving can be voluntary or involuntary. Voluntary saving is the saving that people do because they want to save for a rainy day or for retirement. Involuntary saving is the saving that people do because they do not have enough money to spend on consumption.
All of the above can refer to the saving which takes place because goods are not available for consumption rather than consumer really want to save. However, the most accurate term for this type of saving is forced saving.