Which of the following statements is meaningless? A. There was a 3% decrease in the price of sugar.
B. There was a 200% increase in the population of a town.
C. There was a 120% decrease in the amount of water in a dam. D. There was a 0% change in the temperature in the room after 1 hour.

(C)

Step-by-step explanation:

If can't have a meaning as something can't decrease more than 100% of itself.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional