Final answer:
Option b (16 oz for $4.64) has the lowest unit price of $0.29 per ounce.
Step-by-step explanation:
To find the lowest unit price, we need to divide the total cost by the number of ounces in each option. Let's calculate the unit price for each option:
- Option a: Unit price = $5.40 / 18 oz = $0.30/oz
- Option b: Unit price = $4.64 / 16 oz = $0.29/oz
- Option c: Unit price = $3.72 / 12 oz = $0.31/oz
- Option d: Unit price = $3.30 / 10 oz = $0.33/oz
Therefore, option b (16 oz for $4.64) has the lowest unit price of $0.29 per ounce.