💡 Detailed Explanation
The correct choice is 'のりかえて' (from '乗り換える' - to transfer / change trains). The particle 'に' before '地下鉄' indicates transferring into the subway. Sentence translation: 'Please transfer to the subway at the next station.' 'のりおくれて' means missing the train. 'のりこして' means overshooting/riding past one's station. 'おりて' (to get off) would require the particle 'を' or 'から' (e.g. 電車を降りる).