Why does the president pro tempore usually preside over the senate?

a. the u. s. constitution provides for the leadership of the senate
b. the vice president is not allowed in the senate chambers during debates or discussions
c. the vice president usually devotes time to executive branch duties
d. the president pro tempore is the majority leader in the senate

Which action bestillustrates the process of making an interpretation? a. a historian reads a secondary source about the cold war to find out the dates and locations of important historical occurrences. important historical occurrences, b. a historian publishes a popular article about racism in 20th- century south africa but does not cite any sources. c. a historian writes a textbook designed to teach college students about the duties of a professional historian. d. a historian reads speeches by english and french leaders during world war il to differentiate between their content and tone.