How many degrees Fahrenheit is equal to -5º Celsius?

To determine how many degrees Fahrenheit correspond to -5º Celsius, you can use the formula for converting Celsius to Fahrenheit:

[ F = \left( C \times \frac{9}{5} \right) + 32 ]

Plugging -5º Celsius into the formula:

1. Multiply -5 by 9/5:

[ -5 \times \frac{9}{5} = -9 ]

2. Then add 32:

[ -9 + 32 = 23 ]

Thus, -5º Celsius is equal to 23 degrees Fahrenheit.

This makes 23 degrees the correct answer. The other options do not accurately convert -5º Celsius into Fahrenheit, as each would yield a number that results from a different calculation or conversion. Therefore, recognizing the conversion formula helps clarify how to reach the accurate temperature in Fahrenheit.