"What does she ask?"
Translation:वह क्या पूछती है ?
पूछो is the imperative form. You use it when you are instructing or requesting someone to 'ask'. Eg: 'नेहा, उनसे पूछो!' - 'Neha, Ask them!'.
पूछती is the feminine simple present tense form. It is used to ask that someone habitually 'asks'. Eg: 'नेहा हमेशा बहुत सवाल पूछती है' - 'Neha always asks a lot of questions'.