Answer:
There are 8 grams of protein per cup of milk.
C is correct.
Explanation:
We are given a graph of Protein( gram) Vs Amount of milk (cups).
In graph
x-axis represents Amount of Milk (cups)
y-axis represents Protein (grams)
In graph, Line passing through (0,0) and (1.5,12)
Using two point we will make equation of line.



Now, we will check each option.
Option A: Put a=2 and P=20


False
Option B: Put a=1 and P=13.5


False
Option C: Put a=1 and P=8


True
Option D: Put a=12 and P=1.5


False
Hence, There are 8 grams of protein per cup of milk.