To calculate the density of the apple juice, you can use the formula:
\[ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \]
Here, the mass of the apple juice is given as 0.25 kilograms, which can be converted to grams (since 1 kilogram = 1000 grams):
\[ 0.25 , \text{kg} = 0.25 \times 1000 , \text{g} = 250 , \text{g} \]
The volume is given as 320 cm³.
Now, plug these values into the density formula:
\[ \text{Density} = \frac{250 , \text{g}}{320 , \text{cm}^3} \]
Calculating this gives:
\[ \text{Density} = 0.78125 , \text{g/cm}^3 \]
Rounding this to two decimal places gives approximately 0.78 g/cm³.
So, the correct answer from the options provided is:
0.78 g/cm³.