What is the solution to the equation -5.20?

In the equation provided, "-5.20" indicates a specific value rather than a problem to solve or an equation requiring manipulation. Since the value itself is presented as is, the correct choice simply restates the same numerical representation, making it the accurate answer.

The other options represent different values that do not equal -5.20. Therefore, choosing the same value in the answer aligns perfectly with the input, affirming the understanding that some questions may simply confirm identity rather than involve calculation or solution-finding. The focus on consistency in numerical representation is key here.