To calculate Carmen's earnings for the 5 scarves she made, you can multiply the number of scarves by the amount she earns per scarf.
Carmen's earnings = Number of scarves × Earnings per scarf Carmen's earnings = 5 scarves × $17.60/scarf = $88.00
Now, round $88.00 to the nearest dollar, which is $88.
However, none of the answers provided (A. $90, B. $83, C. $85, D. $80) includes $88. If we are looking for the estimated amount closest to $88, we would choose option A. $90.
So the estimated amount Carmen earned is A. $90.