No rule for this one
No ending or word group predicts the article of Foto. Learn it as a pair and say it out loud: das Foto.
Nouns ending in -o only take das 51.9% of the time, so that is not a rule we teach.
das Foto
It's das Foto. Foto is neuter, plural die Fotos.
Das ist ein Foto von meiner Familie.
That is a photo of my family.
No ending or word group predicts the article of Foto. Learn it as a pair and say it out loud: das Foto.
Nouns ending in -o only take das 51.9% of the time, so that is not a rule we teach.