It's Fuerte for man and woman same as one person or other but if you have multiple-choice and is not in there then it has to be Fuertoso singular and for plural fuertes or fuertosos. they are less common do.
Hope I had helped.
Mi amiga va a tener que ir a buscar a su hermana a la escuela.
Stove (Chemical Energy into Thermal Energy) and a bulb ,coversion of electricity to heat n light energy
