Answer:
D.
Step-by-step explanation:
The equation must be true to have a proportion.
12/20 = 0.6
21/34 = 0.62
A. No
10/15 = 0.666666...
34/60 = 0.566666...
B. No
13/23 = 0.565217...
26/56 = 0.46428...
C. No
25/15 = 1.6666...
85/51 = 1.6666...
D. Yes
Answer: D
