Final answer:
To find the unit cost of one chicken wing, divide the total cost by the number of wings. In this case, the unit cost is $1.70 per wing.
Step-by-step explanation:
To find the unit cost of one chicken wing, we need to divide the total cost by the number of wings. In this case, Brooklyn bought 17 chicken wings for $28.90. So, the unit cost of one wing is $28.90 divided by 17, which equals $1.70 per wing. Therefore, the correct answer is A. $1.70 per wing.