Answer:
1/4
Explanation:
Okay so there are 4 different colors and you are spinning it 100 times.
Green is one of the for colors so the probability is 1/4 
but the denominator for now must be 100 
What is 1/4 of 100 ?
25. 
So the probabiltiy is 25/100 but you need to reduce so it would be 1/4