The correct option is C Bees
Sage flower is a purple coloured open flower which produces strong nectar. When bee probes male sage flower, the lever bend the stamen and deposits its sticky pollen grains at the back of the bee. But when the bee withdraws the flower, lever returns the stamen to their original position. Whereas moths pollinate tobacco, butterflies pollinate milkweed plants and aphids do not pollinate but harm the plants. Thus, the correct answer is option C.