Final answer:
The unit price of each avocado that John bought at the Fort Greene Farmers Market is $2.50, which is calculated by dividing the total cost of $15 by the number of avocados purchased, which is 6.
Step-by-step explanation:
To calculate the unit price of each avocado that John bought at the Fort Greene Farmers Market, we need to divide the total cost by the number of avocados. John bought 6 avocados for $15 in total.
The unit price can be found using the following calculation:
Total cost of avocados / Number of avocados = Unit price of one avocado
$15 / 6 = $2.50
Therefore, the unit price for each avocado is $2.50. So the correct answer is A) $2.50.