Because data on GDP are reported relatively GDP is said to

Because data on GDP are reported relatively ____________, GDP is said to have a _________ inside lag.

Solution

The inside lag is the time taken for the government to respond to a shock in the economy.

In most of the countries the GDP is reported on annually but in some developed countries like U.S, U.K etc.. the GDP is reported quarterly so it becomes so frequent and increase the accuracy of the data. So more frequent report on GDP means there is a short inside lag. So here the answer is

C. Frequently;short.