To find the unit rate of sugar in grams per liter, you can divide the total grams of sugar by the total number of liters.
Given:
- Total sugar = 58 grams
- Total volume = 2 liters
Unit rate = Total sugar / Total volume = 58 grams / 2 liters = 29 grams per liter.
So the correct response is 29 grams per liter.