Which of these statements accurately explains why the common era begins with the birth of jesus of nazareth over 2,000 years ago

The period of time now described as the Common Era is based on older Christian periodization that divided time into a period before Jesus's birth and a period afterward.

Explanation:

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: