From a study of soapberry bugs, evolution can be observed. Soapberry bugs feed on fruits by using their 'beak' to penetrate the fruit and gain nourishment from the seeds within the fruit. Soapberry bugs can feed on the fruit of the balloon vine or the fruit of the Goldenrain tree. In central Florida, the native balloon vine has become rare and the Goldenrain tree is now the main food source for soapberry bugs. When the beak length of the soapberry bug populations feeding on different fruits was measured after many generations, a difference was noted.
Which of these statements predicts the outcome of evolution based on the food sources for the soapberry bugs? Select ALL that apply.