a) Summer in the northern hemisphere is when days are longest. Actually, the first day of summer is the longest day, so the longest days are the ones in late spring and early summer.
b) Days and nights are equal length at the spring and fall equinoxes.
Since there is no passage I’m going to make an educated guess d since that one makes more sense sorry if wrong
To find the range, you find the biggest and smallest number of the set of numbers.
biggest number = 125
smallest number = 90
Now, the biggest number take away the smallest number is the range.
125 - 90 = 35
range = 35