To determine the speed of light as a unit rate in millions of miles per minute, we can divide the total distance traveled by the time taken.
Given:
- Distance = 93 million miles
- Time = 8 minutes
The speed of light in millions of miles per minute is calculated as follows:
\[
\text{Speed of light} = \frac{\text{Distance}}{\text{Time}} = \frac{93 \text{ million miles}}{8 \text{ minutes}}
\]
Calculating this gives:
\[
\text{Speed of light} = 11.625 \text{ million miles per minute}
\]
Rounding to one decimal place, this is approximately 11.6 million miles per minute.
So the correct response is:
11.6 million miles per minute.