Final answer:
The unit price of the olive oil is $0.75 per ounce when you divide the total cost of $12.60 by the weight of 16.8 ounces.
Step-by-step explanation:
To calculate the unit price of olive oil, you divide the total cost by the total weight in ounces. The given total cost is $12.60 for 16.8 ounces.
Unit Price = Total Cost / Total Weight
Unit Price = $12.60 / 16.8 ounces
Unit Price = $0.75 per ounce
Therefore, the unit price is $0.75 per ounce, which corresponds to answer choice (a).