If you have wrote televisiones right, than it is masculine. Any words ending with the letters D-I-O-N-Z-A are feminine. Any words ending with the letters L-O-N-E-R-S is masculine. The acronyms are Dionza and Loners.
Your correct option would be the third option
Gladys se sintio muy mal despues de la operacion.
Hope I have helped! Have a good day!
