To find out how many bows Samantha can make, we need to divide the total amount of ribbon she has by the amount of ribbon needed for each bow.
Total ribbon = 83.2 meters
Ribbon per bow = 1.28 meters
Now, we perform the division:
\[ \text{Number of bows} = \frac{83.2}{1.28} \]
Calculating that:
\[ 83.2 \div 1.28 = 65 \]
Thus, Samantha can make 65 bows.
The correct answer is C. 65.