To find the percentage of free throws the basketball player missed, we first need to determine how many he missed.
He made 5 out of 6 free throws, so:
\[ \text{Missed free throws} = 6 - 5 = 1 \]
Now we can calculate the percentage of missed free throws:
\[ \text{Percentage missed} = \left(\frac{\text{Missed free throws}}{\text{Total free throws}}\right) \times 100 \]
Substituting the values:
\[ \text{Percentage missed} = \left(\frac{1}{6}\right) \times 100 \approx 16.67% \]
Therefore, the percentage of free throws he missed is approximately 16.67%.
Among your provided options, the correct match is:
16.66¯¯¯¯¯ % (or 16 point Modifying above 66 with bar percent).