Final answer:
The cost of a 16-ounce bottle of water is $2.40 and the unit rate is $0.15 per ounce.
Step-by-step explanation:
To find the cost of a 16-ounce bottle of water, we need to determine the unit rate. We can do this by comparing the cost of different amounts of water. Option C, which states that 16 ounces cost $2.40, is the correct answer. To calculate the unit rate, we divide the total cost by the number of ounces: $2.40 / 16 ounces = $0.15 per ounce. Therefore, the unit rate is $0.15 per ounce.