Final answer:
Bill Clinton and Barack Obama are the left-handed presidents from the given options. The topic is noteworthy as there have been several left-handed U.S. presidents, sparking interest among historians and the populace.
Step-by-step explanation:
The left-handed presidents among the options listed are B) Bill Clinton and D) Barack Obama. George Washington's handedness is not well documented, but there is no strong evidence to suggest that he was left-handed. Franklin D. Roosevelt was not known to be left-handed; however, due to polio, his right side was paralyzed which might have affected how he wrote or performed other tasks.
In the provided list of presidents, both Bill Clinton and Barack Obama are known to be left-handed. There is a significant number of U.S. presidents who were left-handed, and this has been a topic of interest among historians and the public.
Answering the unrelated questions mentioned, the president who signed the Voting Rights Act was Lyndon Johnson. The person who was not a Federalist among the given options is Patrick Henry. Chester A. Arthur made significant steps towards civil service reform. A generally considered dictator among the listed leaders is Kim Jong-Un.