Kan is present tense so is it accurate to state that this means “could”? Not really helpful for a beginner as you are left wondering whether this IS grammatically correct or not? Help, please?
Basically, “could” translates to either “kunde” or “skulle kunna”. “Skulle det kunna vara Tom?” is the exact translation, but it is a bit unwieldy to formulate, whereas the given translation is simple and acceptable, in present tense.