Elisa en forma con el entrenamiento de vólibol. a. me mantengo b. se mantiene c. mantenerse

Which best explains how a historian synthesizes evidence to reach a conclusion? o a. the historian makes comparisons among multiple primary and secondary sources. o b. the historian researches only one primary source and one secondary source. o c. the historian uses only secondary sources to support a claim. o d. the historian draws conclusions from a single primary source.