The answer is C. Electors were decided by the popular vote of citizens
Answer:
Wind speed
Explanation:
Climatology is the study of the climate or average weather condition over a period of time. The main parameters involved in this study are temperature, rainfall(precipitation) and wind.
This means wind is the missing parameter in the question hence it’s the answer
As of 2009, Sunni Muslims constituted 87–90% of the world's Muslim population-
the Shia believe that leader is called an imam and this "caliph/imam" should be a direct descendant of Mohammed-
and I have no clue on the last one