To find the unit rate for brake pads produced per hour, we can use the total number of brake pads produced and the total hours worked.
From the table:
- In 12 hours, the total number of brake pads produced is 192.
Now we can calculate the unit rate:
\[ \text{Unit rate} = \frac{\text{Total brake pads}}{\text{Total hours}} = \frac{192 \text{ brake pads}}{12 \text{ hours}} = 16 \text{ brake pads per hour} \]
So, the correct answer is:
D. 16 brake pads per hour