Question

Choose the best Spanish equivalent to the phrase.

Carlos has been watching television for five hours.

Carlos tiene sido mirar la tele por cinco horas.
Hace cinco horas que Carlos mira la tele.
Hace desde cinco horas Carlos ha estado mirando la tele.
Carlos tiene cinco horas que mira la tele.

Answer 1

Carlos tiene cinco horas que mira la tele.

This is the only one that actually makes sense without sounding wonky, I am fluent in Spanish and this is how I would say it.
Hope this helps!