According to researchers...
because that means scientists have researched it
I think its A because suffrage is the right to vote and the end of the sentence indicates that the word before it means the right to vote
The answer is B, you rewrite the original completely in your own words, altering the sentence structure. Hope this helps!
Months don't have 80 days (only four months of 30 days make eighty days).
Months have 30 or 31 days. February is the only month with 28 days, except for leap years in which February has 29 days.
January, March, May, July, August, October and December have 31 days. Whereas April, June, September and November have 30 days.