To calculate the density of a substance, you can use the formula:
\[ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \]
Given the mass of the apple juice is 0.25 kg, we first convert this to grams:
\[ 0.25 , \text{kg} = 250 , \text{g} \]
The volume is given as 320 cm³. Now we can calculate the density:
\[ \text{Density} = \frac{250 , \text{g}}{320 , \text{cm}^3} \approx 0.78125 , \text{g/cm}^3 \]
Rounding to two decimal places gives us approximately 0.78 g/cm³.
Therefore, the correct response is:
0.78 g/cm³