💡 Detailed Explanation
The correct choice is Option 1: 'This is a humble/uninteresting thing, but please have it.' In Japanese culture, when giving a gift (especially to a superior like a teacher), it is a standard polite formula of modesty to say: 'つまらないものですが、どうぞ' (literally: it is a boring thing, but please accept it). Option 2 ('早く食べてください' - Please eat quickly) sounds overly commanding and lacks modesty. Option 3 ('私がもらいました' - I received this) implies giving away something secondhand, which is impolite.