is the process of sitting on an idea and using the time to collect massive data that may be stored, retrieved, studied, reshaped, and molded into something new.

C) incubation

Explanation:

In psychology, incubation tend to occurs when a person has a spark of ideas but still hasn't find a way to transform that idea into something concrete/usable. This is why this spark of ideas lies dormant within their conscious and constantly reworked / reshaped overtime.

This phenomenon often occurred among inventors, writers, or programmers.

For example,

Often times, a programmer will have a spark of ideas about a software that can be popular in the market. But that programmer still hasn't quite figure out how to properly code it and make that ideas into reality. So that idea just stick in their head until he obtain further data that enable him/her to move further.

the density would be a smaller number.

not  

cuba  

russia  

iraq  

el salvador  

explanation:

known as the land of volcanoes, el salvador has visit seismic tremors and volcanic movement. it is the main nation in central america that does not have a coastline on the caribbean sea. about portion of all salvadorans live in the wide open. they are poor and don't have power or running water in their homes. in 1525, pedro de alvarado, a lieutenant of cortés's, vanquished el salvador. el salvador, with alternate nations of central america, pronounced its freedom from spain on sept. 15, 1821, and was a piece of a league of central american states until the point when that association broke up in 1838.