I wasn’t raised Muslim. My father claims to be Muslim but doesn’t pray and says he prays in his own way. Other than his name, there are not many signs of practicing Islam. When asked if my parents are Muslim, is it wrong to say my father isn’t, even if I can’t honestly say he is? How must I answer?

Ustadh AbdulAziz al-Haqqan

You and I don't pass such rulings on others, this is for those in authority and official muftis.