How can i determine if an interconnection of ideal sources in circuits are valid?

In circuit theory, the voltages of parallel components are equal, while the currents of series components are equal. In that sense, ideal voltage sources can be freely connected in series, but must be of equal values to be connected in parallel. Similarly, ideal current sources can be freely connected in parallel, but must be of equal value to be connected in series.

Charles darwin marked the difference among countless finches on the galápagos islands.i hope i !

Ithink the answers is b i hope it my friend message me if i’m wrong and i’ll change my answer and fix it for you