Which statement is true?

a. a sitting bill is a bill that is in the midst of active progress.
b. both houses of congress are part of the executive branch.
c. a conference committee is formed only for re-election purposes.
d. if a bill is approved by the committee and has survived a senate vote, the bill will go to the house of representatives.

Historians have estimated numbers based on inaccurate records.

Explanation:

Many historical events have different data about a particular event. The results of these oscillations are different. Primarily, different attitudes of chroniclers and bias in various forms contribute to the appearance of these data. Therefore, historians must be careful when analyzing available sources, looking objectively, and analyzing all available sources to approximately reach the historical truth.