Can or may?
People are often uncertain about whether there is any difference between can and may when these verbs are used to ask for or grant permission. For example, is one of these two sentences ‘more correct’ than the other?
But the 'permission' use of can is not in fact incorrect in standard English. The only difference between the two verbs is that one is more polite than the other. In informal contexts it's perfectly acceptable to use can; in formal situations it would be better to use may.