Which branch of the government has often been charged with interpreting the proper extent of presidential powers?

The answer is: The executive branch

The executive branch of the government had the right to exercise government authority and implement the government programs.

This branch is headed directly by the President. So, they often need to interpret the proper extend of presidential powers to ensure that all of their actions do not deviate from the standard that limited under the united states constitution.

can you tell me what is it

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: