Which body process converts physical energy to electrical energy?

The correct answer is transduction.

Explanation:

Transduction refers to the biological phenomenon in which any external physical stimuli is attained and transmitted from one section of the body to another. At this time, the physical energy, that is, the stimuli get transformed into electrochemical stimuli.  

In the nervous system, transduction generally signifies the stimulus-alerting events in which a physical stimulus is transformed into an action potential, which is conducted along the axons towards the CNS for integration. A receptor cell transforms the energy of a stimulus into an electrical signal.  

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.