Fundamental to understanding a particular time in history

The context of when something is taking place

Explanation:

The correct answer is C. The uncovering and careful reading of primary sources.

Explanation:

This element is fundamental to understanding a point in time because a primary source provides direct evidence about a historic event, person, place or situation. This original information allows other investigations as a point of reference.

Primary sources can be diaries, interviews, fieldwork, pictures, books, ancient texts, government documents., and historic records.

Explanation:

the density would be a smaller number.

answer; strength of association;