A unit rate is typically expressed as a fraction that compares one quantity to one unit of another quantity. To identify a unit rate from the options you've provided, we need to look for a fraction that represents a comparison to one unit.
Among the options given:
- \(\frac{3}{4}\) (34)
- \(\frac{7}{5}\) (75)
- \(\frac{1}{27}\) (127)
- 271
The fraction that represents a unit rate is \(\frac{1}{27}\) because it indicates a quantity (1) per another quantity (27), which aligns with the definition of a unit rate.
Thus, the correct response is: \(\frac{1}{27}\) (127).