Answer:
The lowest elevation, in meters, in Louisiana is 20 m below sea level
Step-by-step explanation:
Below sea level means negative integer
So, Negative integer represents the lowest elevation in California
The lowest elevation in California  below sea level = -80 m
We are given that The lowest elevation in Louisiana is also below sea level and is about 1/4 the value of California's lowest elevation.
So, The lowest elevation, in meters, in Louisiana =[tex]\frac{1}{4} \times (-80)[/tex]
The lowest elevation, in meters, in Louisiana = -20 m
Hence The lowest elevation, in meters, in Louisiana is 20 m below sea level