Choice-1 : May be for real signals but wrong for complex signals. It's better to state it as; from $-5$ kHz to $5$ kHz baseband signal.
Choice-2 : Is wrong for real signals but may be for complex signals. Since a real signal with a frequency spectrum extending from $-2.5$ kHz to $2.5$ kHz is a baseband signal with a bandwidth of $2.5$ kHz by definition which is the max positive frequency for baseband (extending from -W to +W) real signals. If that was a complex signal, however, then its total bandwidth could be $5$ kHz in that case (extending from $-2.5$ kHz to $2.5$ kHz.)
Choice-3 : This can be true both for real and complex signals.
So, the statement is clearly missing necessary information and can be understood in multiple ways.